Esparza, 36, retires after 14 years of professional fighting, including nearly a decade in the UFC. She was the first-ever UFC women’s strawweight champion, winning gold in the “TUF 20” Finale against Rose Namajunas. She lost the title in her following bout against Joanna Jedrzejczyk.

Carla Esparza, a two-time strawweight champion and a pioneer in women's MMA, retired from the sport following a unanimous decision loss to Tecia Pennington at UFC 307.

Former two-time UFC strawweight titleholder and the organization’s inaugural 115-pound champ Carla Esparza announced her retirement following a close loss at UFC 307.

The party responsible for the violent jumping knockout was Joaquin Buckley (19-6 MMA, 9-4 UFC), who crumpled “Wonderboy” Thompson (17-7-1 MMA, 12-7-1 UFC) with a jumping right hook that ended the fight at 2:17 of Round 3. The welterweight bout closed out the UFC 307 preliminary card at Delta Center in Salt Lake City.

Joaquin Buckley has stunned UFC fans with a devastating comeback knockout over fan-favorite fighter Stephen Thompson at UFC 307. Buckley struggled with Thompson's Karate striking in the first two rounds,

Joaquin Buckley grabs a huge knockout win in Round 3 over Stephen "Wonderboy" Thompson at UFC 307.