Alyona started MMA at the insistence of her father after she was bullied at school and dad decided that the girl should learn to defend herself.[3] Alyona is a head coach for Club "Rage" in Dnipro, along with her husband Alexey Fedonov.[4] In 2020, she appeared on "Supermama", a Ukrainian psychological family reality, where parents are rated on how good of parents they are.[5]
Mixed martial arts career
Early career
Starting her career in 2010, Alyona fought most of her early career in the regional Ukrainian scene, most for the promotion Oplot Challenge, compiling a 10–2 record. In 2014, she faced Invicta FC vet Katja Kankaanpää at Lappeenranta Fight Night 10 on May 17, 2014, and UFC and Rizin FF vet Seo Hee Ham in Alyona's atomweight debut at Road FC 018 on August 30, 2014. She lost her fight against Katja via second round armbar and her fight against Ham via unanimous decision.[6]
After her loss to Seo Hee Ham, Alyona took time off from her fighting career due to the birth of her daughter.[7]
Competing with World Warriors Fighting Championship, Alyona won both her bouts for the promotion, against Samantha Jean-Francois and Elaine Leal, the former being for the WWFC Atomweight Championship.[8]
ONE Championship
In her ONE debut, Rassohyna faced Stamp Fairtex at ONE Championship: Unbreakable 3 on January 22, 2021.[9] Despite being dominating the majority of the fight, Alyona won via submission in the closing seconds, giving Stamp her first loss in MMA competition.[10]
After a three-years hiatus, Rassohyna was scheduled to face Denice Zamboanga for the interim ONE Women's Atomweight World Championship on October 5, 2024, at ONE Fight Night 25.[15] However in August 2024, it was announced that Zamboanga had withdrawn from the bout due to a hamstring injury.[16] The bout will be rescheduled on January 11, 2025, at ONE Fight Night 27.[17]