Montana De La Rosa has nine losses against nine opponents on her MMA record. For a list of De La Rosa's best fights, refer to "Best fights of Montana De La Rosa".
On October 7, 2023 Montana De La Rosa faced off against JJ Aldrich in a flyweight bout at age 28. She was coming in with a record of 12-9-1 (9), and Aldrich was 31 years old and with a record of 12-6 (3). De La Rosa lost the fight via 3-round unanimous decision.
On February 25, 2023 Montana De La Rosa faced off against Tatiana Suarez in a flyweight bout at age 28. She was coming in with a record of 12-8-1 (9), and Suarez was 32 years old and with a record of 8-0 (5). De La Rosa lost the fight via 2nd-round submission.
On April 23, 2022 Montana De La Rosa faced off against Maycee Barber in a flyweight bout at age 27. She was coming in with a record of 12-7-1 (9), and Barber was 23 years old and with a record of 9-2 (7). De La Rosa lost the fight via 3-round unanimous decision.
On September 5, 2020 Montana De La Rosa faced off against Viviane Araújo in a flyweight bout at age 25. She was coming in with a record of 11-6 (8), and Araújo was 33 years old and with a record of 8-2 (7). De La Rosa lost the fight via 3-round unanimous decision.
On June 22, 2019 Montana De La Rosa faced off against Andrea Lee in a flyweight bout at age 24. She was coming in with a record of 10-5 (8), and Lee was 30 years old and with a record of 10-2 (6). De La Rosa lost the fight via 3-round unanimous decision.
On January 13, 2017 Montana De La Rosa faced off against Cynthia Calvillo in a strawweight bout at age 21. She was coming in with a record of 6-4 (4), and Calvillo was 29 years old and with a record of 2-0 (1). De La Rosa lost the fight via 3rd-round TKO.
On October 14, 2016 Montana De La Rosa faced off against Mackenzie Dern in a strawweight bout at age 21. She was coming in with a record of 6-3 (4), and Dern was 23 years old and with a record of 1-0 (0). De La Rosa lost the fight via 1st-round submission.
On January 10, 2015 Montana De La Rosa faced off against Maylene Estudillo in a flyweight bout at age 19. She was coming in with a record of 0-2 (0). De La Rosa lost the fight via 3-round unanimous decision.
On September 6, 2014 Montana De La Rosa faced off against Jazmin Quezada in a flyweight bout at age 19. She was coming in with a record of 0-1 (0). De La Rosa lost the fight via 3-round split decision.
