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.

After starting her professional career at 4-0, Pennington won her first three fights in the UFC before losing to future champion Rose Namajunas. She's fought many of best female fighters in the UFC's history including Zhang Weili and Joanna Jędrzejczyk.

We have you covered for all of tonight's UFC 307 results, including the women's strawweight bout between Carla Esparza and Tecia Pennington.

UFC 307 continues with a fight between Carla Esparza and Tecia Pennington. Check out our UFC odds series for our Esparza-Pennington prediction.

Carla Esparza didn’t end her career the way she wanted after following through with her retirement following a decision loss to Tecia Pennington at UFC 307

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 UFC Octagon has seen countless legends rise and fall, but few have left as lasting an impact as Carla Esparza. The inaugural strawweight champion, known for her relentless work ethic and technical prowess,