Undefeated Knockout Artist Joins UFC Mexico City on Three Days’ Notice
In an unexpected turn of events, Regina Tarin has stepped up to face Ernesta Kareckaite in the UFC Mexico City event on February 28, 2026. Tarin, an undefeated knockout artist, is making her Octagon debut on just three days’ notice after Sofia Montenegro withdrew from the matchup for undisclosed reasons.
Regina Tarin: The Undefeated Knockout Artist
At only 21 years of age, Regina Tarin holds an impressive record of 7-0. She is known for her striking power, boasting an 84% finish rate with four knockouts and two submissions. Tarin has fought previously under the Combate Global banner, with a notable victory over former Ultimate Fighter competitor Kaytlin Neil last year.
Originally, Tarin was scheduled to compete in a Muay Thai bout over the same weekend in Mexico City. This background helps facilitate her quick shift to MMA, minimizing the pressure of a last-minute change.
Ernesta Kareckaite’s Background
Ernesta Kareckaite, with a professional record of 6-1-1, comes into this matchup riding a victory against Nicolle Caliari. This split decision win marked her rebound after a loss to Dione Barbosa in her UFC debut at UFC 301. Kareckaite currently holds a record of 1-1 in the UFC.
UFC Mexico City Event Lineup
UFC Mexico City promises an exciting night of fights. Below is the final lineup for the event:
- Brandon Moreno vs. Lone’er Kavanagh
- David Martinez vs. Marlon Vera
- Daniel Zellhuber vs. King Green
- Felipe Bunes vs. Edgar Chairez
- Kevin Borjas vs. Imanol Rodriguez
- Santiago Luna vs. Angel Pacheco
- Ryan Gandra vs. Jose Medina
- Macy Chiasson vs. Ailin Perez
- Kris Moutinho vs. Cristian Quinonez
- Douglas Silva de Andrade vs. Javier Reyes
- Ernesta Kareckaite vs. Regina Tarin
- Francis Marshall vs. Erik Silva
- Damian Pinas vs. Wesley Schultz
As this lineup indicates, fight fans can expect a series of thrilling matchups during the event, highlighted by the debut of the undefeated Regina Tarin.
