Sofia Montenegro, a Contender Series Season 9 winner making her UFC debut, withdrew from her scheduled fight against Ernesta Kareckaite at UFC Mexico City on February 28, 2026, at Arena CDMX. The reasons for her withdrawal were not disclosed. Regina Tarin, an undefeated 7-0 knockout specialist and 21-year-old prospect, stepped in on short notice to face Kareckaite at a catchweight of 130 pounds. Tarin, known as 'Kill Bill,' boasts an 84% finish rate and was already in Mexico City for a scheduled Muay Thai fight. This last-minute replacement showcases the UFC's ability to quickly secure replacements for late withdrawals.
