After beginning his martial arts training in taekwondo at twelve years old, he later switched to kickboxing and Muay Thai and racked up over a hundred amateur fights, and a bronze medal at the 2004 WMF World Championships, before turning professional and relocating to France.
[2] Özkul had an extensive amateur career, compiling a record 96-15-4 with 35 knockouts and representing Turkey at the 2004 WMF World Championships in Bangkok, Thailand where he picked up a bronze medal in the -57 kg/125 lb division.
[2] Özkul and Bastard rematched in Paris on December 6, 2008, with the Turk scoring an early right hook knockdown followed up by a barrage of unanswered punches to force a first round technical knockout and retain the French title.
[7][8] The pair were set to rematch at M-One: Thailand vs. America in Los Angeles, California, United States on October 21, 2011[9] but Özkul was replaced by Andres Martinez for undisclosed reasons.
In his second title fight in as many months, he TKO'd Thomas Adamandopoulos in the fourth round to win the ISKA World Super Lightweight (-62.3 kg/137.3 lb) Oriental[broken anchor] Championship at Urban Boxing United in Marseille, France, on May 19, 2012.
[25][26] Best of Siam 4 in Paris played host to a highly anticipated match between Yetkin Özkul and fellow brawler Pornsanae Sitmonchai on June 20, 2013, with the Turk coming in as a slight underdog.
[29][30] He competed in La 20ème Nuit des Champions -62 kg/136 lb tournament in Marseille, France on November 23, 2013, beating Masahiro Yamamoto on points in the semi-finals before losing to Karim Bennoui by the same margin in the final.
[31][32] Özkul defeated Pornsanae Sitmonchai via third round TKO in a rematch at Le Choc des Légendes 2014 in Saint-Ouen, Seine-Saint-Denis, France on March 8, 2014 to win the WBC Muaythai World Lightweight (-61.2 kg/135 lb) Championship.
[33] There was considerable controversy surrounding the match as the Sitmonchai camp claimed post-fight that Pornsanae had only been informed of the title on the line in the days leading up to the fight and that Özkul had been prevented from making the contracted weight due to stomach problems and instead weighed in around 72 kg/160 lb, although no official weigh-ins took place.