Ovsiienko made a big statement in her first month as a collegiate tennis player by winning the NateRentals.com Binghamton Championships to earn a spot in the ITA Conference Masters in early November. The Ukraine native defeated top seeded Daria Rogova of Mercyhurst (7-6 (7-4), 7-6 (7-0)) in the quarterfinals, 2025 All-NEC selection Mia Tsoukalas from LIU (3-6, 6-4, 6-3) in the semifinals, and teammate Anastasia Lim (6-2, 1-1 (ret.)) in the final. One of three FDU flight winners at the event, Ovsiienko has also impressed outside of that tournament, posting a 10-2 mark in singles and notching non-conference wins over competitors from Lehigh, Navy, Fairfield and Bucknell.