Dutch kickboxer
Nicolaas Hubertus Holzken (born December 16, 1983) is a Dutch kickboxer and professional boxer currently signed to ONE Championship , where he competes in the Lightweight division. He is the former Glory Welterweight Champion .[ 3] In 2018, Holzken participated in the World Boxing Super Series as a substitute.
Background
After his parents separated when he was an infant, Nieky was raised up by his paternal grandparents.[ 4] Inspired by martial arts movies, he started training kickboxing at the age of ten.[ 2]
Career
K-1
Nieky Holzken made his K-1 debut on November 26, 2006, at K-1 World MAX North European Qualification in Stockholm, Sweden . He won the tournament by three consecutive KO's over Björn Kjöllerström, Joakim Karlsson and Elias Daniel. The win qualified him for the K-1 World MAX 2007 Final Elimination , where he was matched up against the reigning K-1 MAX champion Buakaw Por. Pramuk . He lost the fight by unanimous decision .
Glory
He faced Murat Direkçi at Glory 2: Brussels on October 6, 2012, in Brussels, Belgium[ 5] and won via TKO due to a cut in the second round.[ 6]
He defeated Karim Ghajji via TKO due to a cut in an extension round at Glory 6: Istanbul in Istanbul, Turkey on April 6, 2013.[ 7] [ 8] [ 9]
He was to fight at SLAMM!! - Soema na Basi IV: Londt vs. Adegbuyi in Paramaribo, Suriname on August 8, 2013[ 10] but withdrew for undisclosed reasons.
He was initially scheduled to fight Marc de Bonte in the Glory 13: Tokyo - Welterweight World Championship Tournament semi-finals in Tokyo, Japan on December 21, 2013[ 11] but his opponent was then changed to Karapet Karapetyan who he had previously fought and beat in February 2012 by decision.[ 12] He knocked Karapetyan down in rounds one and two en route to a clear unanimous decision win before facing Joseph Valtellini in the final. In a back-and-forth fight where both pressed forward, landing powerful but technical punches and kicks, Holzken scored a TKO in the dying seconds of the third and final round to be crowned the inaugural Glory World Welterweight (-77.1 kg/170 lb) Tournament Champion .[ 13]
He was set to fight for the inaugural Glory Welterweight Championship against Marc de Bonte at Glory 14: Zagreb in Zagreb, Croatia on March 8, 2014[ 14] but the fight was cancelled when he suffered a shoulder injury in a car accident.[ 15] The match was rescheduled for Glory 16: Denver in Broomfield, Colorado, US on May 3, 2014[ 16] but his lingering shoulder injury again forced him out, and he was replaced by Karapet Karapetyan .[ 17]
On February 6, 2015, Holzken was part of a one-night, four-man welterweight tournament at Glory 19 to determine who would get the next title shot. In the semifinals, he faced Alexander Stetsurenko and won via unanimous decision. In the finals, he faced Raymond Daniels and won via TKO in the third round.
On April 16, 2016, he defeated Yoann Kongolo. After the match-up Holzken expressed his desire to in-ring commentator Joseph Valtellini that he wished to face him again.
On July 2, 2018, Holzken announced on his social media that he had rejected a contract offer from Glory and was entertaining offers from other promotions.[ 18]
Boxing
Since 2013, Holzken had competed in professional boxing alongside his kickboxing career, but in February 2018 he got the biggest opportunity in the sport when he stepped in at late notice to face Callum Smith in the World Boxing Super Series super-middleweight tournament. The Dutchman was 13-0 coming in, and Smith 23-0.[ 19] Smith took the win by unanimous decision, and then went on to KO George Groves in the final.
ONE Championship
Holzken returned to kickboxing when he signed for ONE Championship , making his debut with a second round KO over Cosmo Alexandre at ONE Championship: Warrior's Dream in November 2018.[ 20]
He would challenge Regian Eersel for the inaugural ONE Lightweight Kickboxing World Championship at ONE Championship: Enter the Dragon in May 2019 and lose via unanimous decision.[ 21] The two would rematch for the title in October 2019 at ONE Championship: Dawn of Valor , but Holzken lost again via unanimous decision.[ 22]
It was announced that Nieky Holzken would face Elliot Compton at ONE Championship: Big Bang 2 on December 11, 2020. It was also revealed that Holzken had signed a six-fight contract extension with ONE after his original contract expired.[ 23] [ 24] Holzken knocked Compton out in the first round, with a liver shot.[ 25]
Holzken faced John Wayne Parr in a Muay Thai bout at ONE on TNT 3 on April 21, 2021.[ 26] He won the bout via TKO after dropping Parr with a head kick in the second round.[ 27] A mere fortnight after the bout Holzken announced that his contract had expired and he became a free agent.[ 28]
On September 13, 2021, Holzken announced that he had signed a new multi-fight contract with ONE Championship.[ 29]
In November 2021, Combat Press ranked him as the #5 welterweight kickboxer in the world.[ 30]
As the first fight of his new six-fight contract, Holzken was scheduled to face the one-time ONE Lightweight Kickboxing title challenger Islam Murtazaev at ONE: X on March 26, 2022.[ 31] [ 32] With the removal of all Russian athletes from the event as a result of the 2022 Russian invasion of Ukraine , Murtazaev was replaced by Sinsamut Klinmee and the fight was changed to Muay Thai rules.[ 33] [ 34] He lost the fight by a second-round knockout.[ 35]
Holzken was scheduled to face Islam Murtazaev at ONE 162 on October 21, 2022.[ 36] However, Holzken withdrew with an injury on four days before the bout was supposed to take place.[ 37]
Holzken faced Arian Sadiković at ONE Fight Night 11 on June 10, 2023.[ 38] At the weigh-ins, Holzken weighed in at 176 pounds, 6 pounds over the lightweight limit. As a result, the bout proceeded as a catchweight and Holzken was fined 30% of his fight purse, which went to Sadiković.[ 39] He lost the fight by unanimous decision.[ 40]
Holzken faced Yoshihiro Akiyama in a special-rules bout at ONE 165 on January 28, 2024. The match, contested in MMA gloves, will be three rounds: the first round being boxing rules, the second round being Muay Thai rules, and the third round being MMA rules.[ 41] Holzken won the fight by technical knockout in the first round.[ 42] [ 43] This win earned the $50,000 Performance of the Night awards.[ 44]
Personal life
Holzken's family and in-laws are "woonwagenbewoners", indigenous Dutch Travellers .[ 45] [ 46]
Holzken and his wife Nathelie have a son and a daughter.[ 32]
Titles
Bloody Elbow.com
Glory
WFCA
2011 WFCA K-1 Rules Super Middleweight World champion
SIMTA
2007 SIMTA 72 kg European champion
K-1
Liver Kick.com
SIMTA
2005 SIMTA Light Middleweight European champion.
Kickboxing record
Kickboxing record
94 Wins (58 (T)KO's), 18 Losses, 0 Draws, 1 No Contest
Date
Result
Opponent
Event
Location
Method
Round
Time
Record
2023-06-10
Loss
Arian Sadiković
ONE Fight Night 11
Bangkok , Thailand
Decision (Unanimous)
3
3:00
94-18-0
2022-03-26
Loss
Sinsamut Klinmee
ONE: X
Kallang , Singapore
KO (Punch)
2
1:39
94-17-0
2021-04-21
Win
John Wayne Parr
ONE on TNT 3
Kallang , Singapore
TKO (head kick)
2
1:23
94-16-0
2020-12-11
Win
Elliot Compton
ONE Championship: Big Bang 2
Kallang , Singapore
KO (liver punch)
1
1:36
93-16-0
2019-10-26
Loss
Regian Eersel
ONE Championship: Dawn Of Valor
Jakarta , Indonesia
Decision (Unanimous)
5
3:00
92-16-0
For the ONE Kickboxing Lightweight title
2019-05-17
Loss
Regian Eersel
ONE Championship 96: Enter the Dragon
Kallang , Singapore
Decision (Unanimous)
5
3:00
92-15-0
For the inaugural ONE Kickboxing Lightweight title
2019-02-22
Win
Mustapha Haida
ONE Championship 90: Call to Greatness
Kallang , Singapore
Decision (Unanimous)
3
3:00
92-14-0
2018-11-17
Win
Cosmo Alexandre
ONE Championship 84: Warrior's Dream
Jakarta , Indonesia
KO (uppercut)
2
2:59
91-14-0
2017-12-09
Loss
Alim Nabiev
Glory 49: Rotterdam
Rotterdam , Netherlands
Decision (Unanimous)
3
3:00
90-14-0
2017-06-10
Loss
Cédric Doumbé
Glory 42: Paris
Paris, France
Decision (split)
5
3:00
90-13-0
For Glory Welterweight Championship
2016-12-10
Loss
Cédric Doumbé
Glory: Collision
Oberhausen, Germany
Decision (split)
5
3:00
90-12-0
Lost Glory Welterweight Championship
2016-10-21
Win
Murthel Groenhart
Glory 34: Denver
Broomfield, Colorado
Decision (unanimous)
5
3:00
90-11-0
Defends Glory Welterweight Championship .
2016-04-16
Win
Yoann Kongolo
Glory 29: Copenhagen
Copenhagen, Denmark
Decision (unanimous)
5
3:00
88-11-0
Defends Glory Welterweight Championship .
2015-12-04
Win
Murthel Groenhart
Glory 26: Amsterdam
Amsterdam, Netherlands
Decision (split)
5
3:00
87-11-0
Defends Glory Welterweight Championship .
2015-08-07
Win
Raymond Daniels
Glory 23: Las Vegas
Las Vegas, Nevada, USA
TKO (right knee cut)
3
1:36
86-11-0
Wins vacant Glory Welterweight Championship .
2015-02-06
Win
Raymond Daniels
Glory 19: Virginia
Hampton, Virginia, USA
TKO (4 Knockdowns)
3
1:25
85-11-0
Wins Glory Welterweight Contender Tournament Final.
2015-02-06
Win
Alexander Stetsurenko
Glory 19: Virginia
Hampton, Virginia, USA
Decision (unanimous)
3
3:00
84-11-0
Wins Glory Welterweight Contender Tournament Semi Finals
2014-12-25
Win
Yusuf Karakaya
One Shot World Series
Antalya, Turkey
TKO (Referee Stoppage)
1
2:05
83-11-0
2013-12-21
Win
Joseph Valtellini
Glory 13: Tokyo
Tokyo, Japan
TKO (right hook)
3
3:00
82-11-0
Wins Glory Welterweight World Championship Tournament Final
2013-12-21
Win
Karapet Karapetyan
Glory 13: Tokyo
Tokyo, Japan
Decision (unanimous)
3
3:00
81-11-0
Wins Glory Welterweight Contender Tournament Semi Finals
2013-04-06
Win
Karim Ghajji
Glory 6: Istanbul
Istanbul, Turkey
TKO (cut)
4
80-11-0
2012-10-06
Win
Murat Direkçi
Glory 2: Brussels
Brussels, Belgium
TKO (cut)
2
79-11-0
2012-09-02
Loss
L'houcine Ouzgni
Muay Thai Mania V
The Hague, Netherlands
Extra R. Decision
4
3:00
78-11-0
2012-05-26
Win
Alex Tobiasson Harris
Glory 1: Stockholm
Stockholm, Sweden
TKO (3 knockdowns/liver shots)
2
2:42
78-10-0
2012-03-23
Win
Davit Kiria
United Glory 15: World Series 2012
Moscow, Russia
Decision
3
3:00
77-10-0
2012-02-12
Win
Karapet Karapetyan
Natural Powers
Eindhoven, Netherlands
Decision
5
3:00
76-10-0
Defends WFCA K-1 Rules World Super Middleweight (-76.20 kg) title
2011-12-23
Win
Cyrus Washington
Klaar Om Te Bossen 3
Paramaribo, Suriname
TKO (Cut)
2
2011-11-06
Win
Ky Hollenbeck
Muay Thai Premier League: Round 3
The Hague, Netherlands
Decision (Unanimous)
3
3:00
2011-09-02
Win
Marco Piqué
Muaythai Premier League: Round 1
Long Beach, California, USA
Decision
3
3:00
2011-05-28
Loss
Artur Kyshenko
United Glory 14: 2010-2011 World Series Finals
Moscow, Russia
Decision (Unanimous)
3
3:00
2011-03-19
Win
Carlos Tavares
United Glory 13: 2010-2011 World Series Semifinals
Charleroi, Belgium
KO (Punches)
1
2:04
2011-02-27
Win
Thilo Schneider
Kickboxgala Golden Glory Helmond, Sporthal Haagdijk
Eindhoven, Netherlands
TKO (Corner stoppage)
2
3:00
Wins the WFCA K-1 Rules World Super Middleweight (-76.20 kg) title
2010-10-16
Win
Murthel Groenhart
United Glory 12: 2010-2011 World Series Quarterfinals
Amsterdam, Netherlands
Ext. R Decision
4
3:00
2010-09-12
Loss
L'houcine Ouzgni
Fightingstars presents: It's Showtime 2010
Amsterdam, Netherlands
KO (Left flying knee)
1
0:53
2010-06-19
Win
Cagri Ermis
A1 World Combat Cup
Eindhoven, Netherlands
Decision
3
3:00
2010-05-29
Win
Cosmo Alexandre
It's Showtime 2010 Amsterdam
Amsterdam, Netherlands
Decision (4-1)
3
3:00
2010-04-10
Win
Mourad Salhi
Star Muaythai V
Maastricht, Netherlands
Ext R. Decision
4
3:00
2010-01-30
Win
Leroy Kaestner
Beast of the East
Zutphen, Netherlands
Decision (Unanimous)
3
3:00
2009-12-06
Win
Mohammed Medhar
GGH Gala
Helmond , Netherlands
Decision (Unanimous)
3
3:00
2009-10-17
Win
Faldir Chahbari
Ultimate Glory 11: A Decade of Fights
Amsterdam, Netherlands
Extr R. Decision (Unanimous)
4
3:00
2009-07-13
Loss
Buakaw Por.Pramuk
K-1 World MAX 2009 Final 8
Tokyo , Japan
Decision (Unanimous)
3
3:00
2009-04-21
Win
Chahid Oulad El Hadj
K-1 World MAX 2009 Final 16
Fukuoka, Japan
Decision (Majority)
3
3:00
2008-11-30
Win
Marco Pique
SLAMM "Nederland vs Thailand V"
Almere , Netherlands
KO (Left hook)
3
2:56
2008-10-01
Win
Virgil Kalakoda
K-1 World MAX 2008 Final
Tokyo, Japan
KO (Right hook)
1
1:42
2008-07-06
Win
William Diender
Ultimate Glory 9
Nijmegen, Netherlands
KO (Left body shot)
4
0:47
2008-05-31
Win
José Reis
Beast of the East 2008
Zutphen, Netherlands
Decision (Unanimous)
5
3:00
2008-04-26
Win
Joerie Mes
K-1 World GP 2008 in Amsterdam
Amsterdam, Netherlands
KO (Spinning back kick)
2
2:21
2008-03-15
Win
Karim El Jouharti
It's Showtime 75MAX Trophy 2008 , Super Fight
's-Hertogenbosch, Netherlands
Decision (Unanimous)
3
3:00
2008-01-26
Loss
Alviar Lima
Beast of the East
Zutphen, Netherlands
KO (Left hook)
3
0:36
For WFCA World Thaiboxing Middleweight (-72.57 kg) title
2007-11-24
Loss
Andy Souwer
Shootboxing in the Autotron
Rosmalen, Netherlands
Decision (Unanimous)
3
3:00
2007-10-27
Win
Lamsongkram Chuwattana
SLAMM "One Night in Bangkok"
Antwerp , Belgium
Decision (Unanimous)
3
3:00
2007-09-09
Win
Baker Barakat
Ultimate Glory 5
Amersfoort, Netherlands
Decision (Unanimous)
3
3:00
2007-06-28
Loss
Buakaw Por. Pramuk
K-1 World MAX 2007 Final Elimination
Tokyo, Japan
Decision (Unanimous)
3
3:00
2007-05-13
Win
Marijn Geuens
Fight Night in Veghel
Veghel, Netherlands
KO (Spinning back kick)
2007-04-07
Win
Ruslan Kaladko
Balans Fight Night
Tilburg, Netherlands
Decision (Unanimous)
3
3:00
2007-01-21
Win
Steve Neumann
Ultimate Glory 2
Amersfoort, Netherlands
KO (Left uppercut)
1
2006-11-24
Win
Elias Daniel
K-1 World MAX North European Qualification 2007
Stockholm, Sweden
KO (Left body shot)
3
0:50
Wins K-1 World MAX North European Qualification 2007 tournament title
2006-11-24
Win
Joakim Karlsson
K-1 World MAX North European Qualification 2007
Stockholm, Sweden
KO (Straight right punch)
1
0:34
2006-11-24
Win
Björn Kjöllerström
K-1 World MAX North European Qualification 2007
Stockholm, Sweden
KO (Right hook)
1
2:20
2006-09-23
Win
Jan van Denderen
It's Showtime 75MAX Trophy Final 2006 , Reserve Fight
Rotterdam, Netherlands
Decision (Unanimous)
3
3:00
2006-03-26
Win
Terence Oosterling
West Point Fight II
Tilburg, Netherlands
KO (Left cross)
1
0:10
2006-03-05
Win
Travers Schlee
Future Battle
Bergen op Zoom , Netherlands
TKO
2005-12-17
Win
Ferhat Atasoy
WFCA Gala "The Eye of the Tiger"
Arnhem, Netherlands
KO
2005-10-30
Loss
Donald Berner
It's Showtime 75MAX Trophy Alkmaar , Pool B Semi Finals
Alkmaar, Netherlands
Ext R. Decision (Unanimous)
4
3:00
2005-09-25
Win
Daniel Hudson
Manchester, England
KO (Straight right punch)
1
1:01
Wins SIMTA Muaythai European title
2005-06-18
Win
Melvin van Leeuwaarde
Showdome IV
Amsterdam, Netherlands
KO
2005-04-30
Win
Ömer Tekin
Queens Fight Night
Eindhoven, Netherlands
TKO (Corner stoppage)
1
2005-02-27
Win
Richard Jones
Master Sken's Fight Night
Manchester, England
KO (Straight right punch)
2
1:06
2004-12-12
Win
Servet Cakir
Face to Face 2nd Edition, Final
Apeldoorn, Netherlands
Decision (Unanimous)
5
2:00
Wins M.O.N Dutch Open Amateur tournament (-71kg) title
2004-12-12
Win
Felat Atasoy
Face to Face 2nd Edition, Semi Final
Apeldoorn, Netherlands
Decision (Unanimous)
4
2:00
2004-12-12
Win
Radju Ramdjilal
Face to Face 2nd Edition, Quarter Final
Apeldoorn, Netherlands
KO
2004-09-04
Loss
Henrik Nygaard
Valhalla 2004 Battle of the Vikings
Aarhus, Denmark
KO
4
2004-03-27
Win
Steven Berkolayko
WPKL Muay Thai Champions League XIII
Rotterdam, Netherlands
Decision (Unanimous)
5
2:00
2004-02-21
NC
Mesut Acikyol
Test of Talent Reloaded III
Mortsel , Belgium
No contest
5
2004-02-20
Win
Richard Jones
Master Sken's Fight Night
Manchester, England
TKO
4
2004-02-01
Win
Nico Lombaerts
Thai-Kickboxing Gala
Valkenswaard , Netherlands
KO (Low kicks)
1
2003-12-19
Win
Ali Moftagari
Gala in Kampen
Kampen, Netherlands
KO
2003-06-29
Loss
Frank Sonders
Dutch Muay Thai Championships
Rotterdam, Netherlands
Decision (Unanimous)
5
2:00
2002-11-17
Loss
Wesley Robijn
Jellema promotion, Sporthal "De Wetering"
Houten , Netherlands
KO
2002-10-06
Win
Dennis Rooy
WFCA Gala in Nijmegen
Nijmegen, Netherlands
Decision (Unanimous)
2
2:00
2002-04-13
Win
Reza Rahimpour
TB Den Haag promotion, Fairtex Thaiboksgala
The Hague , Netherlands
TKO
2
Legend : Win Loss Draw/No contest Notes
Professional boxing record
15 fights
14 wins
1 loss
By knockout
11
0
By decision
3
1
No.
Result
Record
Opponent
Type
Round
Date
Location
Notes
15
Win
14–1
Bernard Donfack
TKO
3 (8)
28 Apr 2018
Baden-Arena, Offenburg, Baden-Württemberg, Germany
14
Loss
13–1
Callum Smith
UD
12
24 Feb 2018
Arena Nürnberger Versicherung, Nuremberg, Germany
For WBC (Diamond) super middleweight title World Boxing Super Series: super-middleweight semi-final
13
Win
13–0
Viktor Polyakov
TKO
2 (10)
3 Feb 2018
Sportschool Golden Glory, Helmond, Netherlands
12
Win
12–0
Cagri Ermis
KO
3 (10)
1 Apr 2017
Sportschool Golden Glory, Helmond, Netherlands
11
Win
11–0
Matingu Kindele
UD
10
9 Jul 2016
Sportschool Golden Glory, Helmond, Netherlands
Retained BeNeLux super middleweight title.
10
Win
10–0
Farouk Daku
UD
10
20 Feb 2016
Sportschool Golden Glory, Helmond, Netherlands
Won vacant BeNeLux super middleweight title.
9
Win
9–0
Yesilat Berkta
KO
2 (6)
11 Nov 2015
Update Disco, Meppen, Germany
8
Win
8–0
Ahmed El Ghoulbzouri
PTS
6
6 Jun 2015
Sporthal Genderbeemd, Eindhoven, Netherlands
7
Win
7–0
Mikheil Khutsishvili
KO
3 (8)
19 Apr 2015
Sportschool Golden Glory, Helmond, Netherlands
6
Win
6–0
Ruslan Shchelev
KO
6 (8)
12 Oct 2014
Sportschool Golden Glory, Helmond, Netherlands
5
Win
5–0
Ismael Altintas
TKO
2 (6)
13 Jul 2014
Sportschool Golden Glory, Helmond, Netherlands
4
Win
4–0
Gary Abajyan
TKO
3 (6)
14 Oct 2013
Theater Carré, Amsterdam, Netherlands
3
Win
3–0
Philipp Kolodziej
TKO
2 (6)
21 Sep 2013
Sportschool Golden Glory, Helmond, Netherlands
2
Win
2–0
Ata Dogan
TKO
1 (4)
6 Jul 2013
Sportschool Golden Glory, Helmond, Netherlands
1
Win
1–0
Anatolij Baron
KO
2 (4)
3 Mar 2013
Sportschool Golden Glory, Helmond, Netherlands
Special rules record
Professional record breakdown
1 match
1 win
0 losses
By knockout
1
0
Res.
Record
Opponent
Method
Event
Date
Round
Time
Location
Notes
Win
1–0
Yoshihiro Akiyama
TKO (punches)
ONE 165
January 28, 2024
1
1:40
Tokyo , Japan
Catchweight (187.25 lb) bout. Three-minute rounds alternating between Boxing, Muay Thai and MMA rules. Performance of the Night.
See also
References
^ Glory 23 results Nevada Athletic Commission (August 7, 2015)
^ a b Jarrod Boyle (May 16, 2016). "Verhoeven and Holzken: the New Generation of Dutch Dominance" . tygertyger.com.au .
^ DiPietro, Monty. "Zimmerman is the Man at K-1 Europe GP" . K-1 Grand Prix Website. Archived from the original on 2007-08-15. Retrieved 2008-05-24 .
^ "How Martial Arts Made Nieky Holzken A Better Person" . ONE Championship . November 8, 2018.
^ Rian Scalia. "GLORY 2 Brussels Final Fight Card For This Saturday" . LiverKick.com. Archived from the original on 2014-01-16. Retrieved 2012-10-04 .
^ Rian Scalia (25 September 2019). "GLORY 2 Brussels Live Results" . LiverKick.com.
^ Rian Scalia (5 February 2020). "GLORY 6 Poster/Fighters Expected to Participate" . LiverKick.com.
^ Rian Scalia (5 February 2020). "Updated GLORY 6 Istanbul Fight Card For Saturday, April 6" . LiverKick.com.
^ Rian Scalia (18 May 2018). "GLORY 6 Istanbul: Daniel Ghita vs. Gokhan Saki, Live Results" . LiverKick.com.
^ "SLAMM!! – Soema na Basi IV: Ismael Londt vs. Benjamin Adegbuyi | FSA - FightSport Asia" . Archived from the original on August 18, 2013. Retrieved July 18, 2013 .
^ "Match ups announced for Glory 13 welterweight tournament in Japan ~ Muay Thai Authority" . Archived from the original on October 22, 2013. Retrieved December 9, 2013 .
^ "Raymond Daniels replaces Marc de Bonte in Glory 13 welterweight tournament ~ Muay Thai Authority" . Archived from the original on December 2, 2013. Retrieved December 9, 2013 .
^ Dave Walsh (26 October 2018). "GLORY SuperFight Series Tokyo and GLORY 13 Spoilers" . LiverKick.com.
^ Dave Walsh (5 February 2020). "GLORY Makes GLORY 14 in Zagreb Official" . LiverKick.com.
^ Roy. "GLORY 14 Zagreb: Fight Card" . Kickboxingplanet .
^ Dave Walsh (5 February 2020). "Nieky Holzken vs. Marc De Bonte Set for GLORY 16 Denver" . LiverKick.com.
^ Dave Walsh (5 February 2020). "Nieky Holzken Forced Out of GLORY 16 Title Fight" . LiverKick.com.
^ "Holzken rejects new GLORY Contract" . kickboxingz.com . July 2, 2018.
^ Davies, Gareth A. (2018-02-24). "Callum Smith defeats Nieky Holzken to set up George Groves World Boxing Series final" . The Telegraph . ISSN 0307-1235 . Retrieved 2019-02-15 .
^ "Nieky Holzken Dazzles With A Crushing KO In His ONE Debut | ONE Championship" . www.onefc.com . 2018-11-17. Retrieved 2019-02-15 .
^ "ONE Championship: Enter the Dragon Results" . 17 May 2019.
^ "ONE Championship 2019: Dawn of Valor Results and Highlights" . Bleacher Report .
^ "Nieky Holzken booked to face Elliot Compton according to reports in Holland" . Asian MMA . 2020-10-19. Retrieved 2020-10-19 .
^ "Nieuw contract en comeback in november voor Nieky Holzken bij ONE Championship: 'Ik blijf dé uitdager' " . ed.nl . Retrieved 19 October 2020 .
^ "Holzken zorgt met knock-out voor spectaculaire rentree in Singapore" . ad.nl . Retrieved 11 December 2020 .
^ "John Wayne Parr faces Nieky Holzken at ONE on TNT Part III" . Asian MMA . 2021-02-27. Retrieved 2021-03-01 .
^ Sherdog.com. "One Championship 'One on TNT 3' Play-by-Play & Results" . Sherdog . Retrieved 2021-04-22 .
^ Nieky Holzken [@niekyholzken] (May 6, 2021). "My contract has ended successfully at @onechampionship. What's next for me?" (Tweet ) – via Twitter .
^ Nieky Holzken [@niekyholzken] (September 13, 2021). "It's official... I am proud to say that I have signed another multi-deal with @onechampionship. This is the best contract of my career so far and I am very happy with it" – via Instagram .
^ Aittama, Zach. "Combat Press Kickboxing Rankings: November 2021" . combatpress.com . Retrieved 1 December 2021 .
^ Robinson, Lucky (28 January 2022). "ONE Championship books Nieky Holzken-Islam Murtazaev kickboxing fight for ONE X super-card" . sportskeeda.com . Retrieved 29 January 2022 .
^ a b Dan Kuhl (March 24, 2022). "ONE X's Nieky Holzken: Back in the Saddle" . combatpress.com.
^ "Nieky Holzken faces Sinsamut Klinmee at ONE: 'X' " . Asian MMA . 2022-03-22. Retrieved 2022-03-26 .
^ "ONE Championship announces Sinsamut Klinmee as Nieky Holzken's opponent at ONE X" . Sportskeeda . 2022-03-22. Retrieved 2022-03-26 .
^ Willemse, Jan (26 March 2022). "Nieky Holzken verliest eerste gevecht van 2022: Thaise vechter slaat Helmonder knock-out" . ed.nl . Retrieved 26 March 2022 .
^ Pico, Borna (2 October 2022). "Sitthichai takes on undefeated Mohammed Boutasaa, Dutch legend Nieky Holzken vs. Murtazev set for Oct. 21" . beyondkick.com . Retrieved 2 October 2022 .
^ "More ONE 162 Fight Card Changes" . fightsports.tv . 17 October 2022. Retrieved 18 October 2022 .
^ Emmerink, Ron (21 May 2023). "Nieky Holzken gaat tegenstander Arian Sadikovic compleet slopen! 'Geen genade' " . vechtsportinfo.nl . Retrieved 21 May 2023 .
^ Strobel, Kevin (2023-06-09). "ONE Fight Night 11 Weigh-in Results: Nieky Holzken, Amber Kitchen & Martine Michieletto Miss Weight, Holzken to Forfeit 30% Of His Purse" . Beyond Kick - The Home of Kickboxing . Retrieved 2023-06-09 .
^ Ottens, Chris (10 June 2023). "Ongeloof bij hoofdschuddende Nieky Holzken na verlies in Bangkok: 'Ben hier niet blij mee' " . ed.nl . Retrieved 10 June 2023 .
^ "Everything To Know About The Special Rules Super-Fight Between Nieky Holzken And Yoshihiro Akiyama At ONE 165" . ONE Championship . 2024-01-26. Retrieved 2024-02-03 .
^ "Nieky Holzken Predictably Runs Through Sexyama in Boxing Round of Mixed-Rules Bout" . Cageside Press . 2024-01-28. Retrieved 2024-02-03 .
^ "Highlights! Nieky Holzken sparks Yoshihiro 'Sexyama' in less than two minutes" . MMA Mania . 2024-01-28. Retrieved 2024-02-03 .
^ Pekios, Craig (2024-01-28). "ONE 165: Superlek vs. Takeru - Who won the $50,000 bonuses?" . www.sportskeeda.com . Retrieved 2024-01-29 .
^ AMPD MAGAZINE (17 Feb 2016). "Exclusive interview with Nieky Holzken World Welterweight Champion Kickboxer" . YouTube . Retrieved 8 March 2021 .
^ "Woonwagenbewoner krijgt eigen realityprogramma op Spike" . 23 Sep 2019. Retrieved 8 March 2021 .
^ Fraser Coffeen (9 January 2014). "Kickboxing 2013 Year End Awards: Fighter, Fight, and KO of the Year" . Bloody Elbow .
^ Dave Walsh (5 February 2020). "LiverKick Best of 2013: Fight of the Year" . LiverKick.com.
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