Pala, California, US on August 18, 2012. Her opponent was later changed to Kealani Vanderleest in a non-title affair, however, and Ovchynnikova defeated her by unanimous decision. She was then set to compete in the Shoot Boxing World Tournament Girls S-Cup 2012 in Tokyo, Japan on August 25, 2012 and face Ham Seo-Hee in the quarter-finals but was pulled from the card due to problems between shoot boxing and Ovchynnikova's team and was replaced by Lisa Ward. She represented the WCK Muay Thai promotion's team against a squad of Chinese fighters from Wu Lin Feng at WCK Muay Thai: Matter of Pride in Las Vegas on November 11, 2012. Initially, her opponent was Tang Jin but was changed to Xifeng Tang. She lost by UD. In her return to SFL, Ovchynnikova beat Fathia Mostafa via submission due to a guillotine choke at SFL 16 in Mumbai on April 26, 2013. Back in the Muay Thai ring, she defeated Emily Bearden by UD to be crowned the International Karate Kickboxing Council (IKKC) Women's World Super Bantamweight Muay Thai Champion at WCK Muay Thai: Hot Summer Fights in Temecula, California, US. On January 25, 2014, she lost a split decision to Xiong Jingnan at Kunlun Fight 1 in Pattaya, Thailand. Bellator MMA Lena Ovchynnikova signed with Bellator MMA in 2016, going 2-2 in her first four fights in the promotion. Notably, she was the first-ever female flyweight to appear on a main card for the promotion. Ovchynnikova was expected to face Denise Kielholtz in the co-main event of Bellator 196 in Budapest, Hungary on April 6, 2018. However, the fight did not happen. Ovchynnikova was expected to face Kyra Batara in a strawweight bout at Bellator 261 on June 25, 2021. However, the bout was cancelled the week of the event with one of Batara's corner testing positive for COVID-19. Championships and awards Kickboxing Boxxtomoi 2015 Boxxtomoi Muaythai Women's Championship World Boxing Council Muaythai 2014 WBC Muaythai World Flyweight Championship 2019 WBC Muaythai World Featherweight Championship International Federation of Muaythai Amateur 2010 IFMA Ukrainian Championships Silver Medalist International Karate Kickboxing Council IKKC Women's World Super Bantamweight Muay Thai Championship (One time) International Sport Karate Association 2007 ISKA Amateur European Championships Oriental Gold Medalist 2007 ISKA Amateur European Championships Muay Thai Gold Medalist 2007 ISKA Amateur European Championships Full Contact Silver Medalist 2008 ISKA European Cup Muay Thai Silver Medalist ISKA Women's World