In the final Özcan fought a rematch with Mohammed Jaraya, winning the fight, and the tournament, through a unanimous decision.
[20] Ozcan was scheduled to make his debut at ONE Championship: Battleground on July 30, 2021 against Sitthichai Sitsongpeenong.
[24] Özcan was scheduled to face Sitthichai Sitsongpeenong in the quarterfinals of the ONE Featherweight Grand Prix, which was held at ONE Championship: First Strike on October 15, 2021.
[28] Özcan was expected to face the former Glory lightweight champion Marat Grigorian at ONE on Prime Video 2 on September 30, 2022.
[29] On September 21, Özcan was rescheduled to Superbon Singha Mawynn for the ONE Kickboxing Featherweight Championship as a short-notice replacement for the injured Chingiz Allazov.
[30] Özcan was later once again booked to face Grigorian, as Yusupov and Superbon both failed the pre-fight medical, held the day before the event.
[33] Özcan competed in a featherweight kickboxing match against Superbon Banchamek at ONE Fight Night 11 on June 9, 2023.