Mariana Morais has 12 losses against 12 opponents on her MMA record. For a list of Morais's best fights, refer to "Best fights of Mariana Morais".
On August 19, 2021 Mariana Morais faced off against Taylor Guardado in a lightweight bout at age 26. She was coming in with a record of 17-12 (12). Morais lost the fight via 3-round split decision.
On May 6, 2021 Mariana Morais faced off against Kayla Harrison in a lightweight bout at age 26. She was coming in with a record of 16-11 (12), and Harrison was 30 years old and with a record of 8-0 (6). Morais lost the fight via 1st-round TKO.
On May 24, 2019 Mariana Morais faced off against Vanessa Melo in a bantamweight bout at age 24. She was coming in with a record of 13-10 (11), and Melo was 31 years old and with a record of 8-5 (2). Morais lost the fight via 3-round split decision.
On August 5, 2018 Mariana Morais faced off against Norma Dumont in a bantamweight bout at age 23. She was coming in with a record of 13-9 (11), and Dumont was 27 years old and with a record of 3-0 (2). Morais lost the fight via 3-round majority decision.
On July 21, 2018 Mariana Morais faced off against Daiane Firmino in a flyweight bout at age 23. She was coming in with a record of 13-8 (11). Morais lost the fight via 3rd-round submission.
On March 17, 2018 Mariana Morais fought Lara Fritzen in a bantamweight title fight for the Shooto Brazil Women's Championship title. Morais was 22 years old and with a record of 12-7 (11). Morais lost the fight via 3-round unanimous decision.
On January 13, 2018 Mariana Morais faced off against Vanessa Porto in a flyweight bout at age 22. She was coming in with a record of 12-6 (11), and Porto was 33 years old and with a record of 19-8 (12). Morais lost the fight via 1st-round submission.
On October 22, 2017 Mariana Morais faced off against Ariane Lipski in a flyweight bout at age 22. She was coming in with a record of 12-5 (11). Morais lost the fight via 1st-round submission.
On December 17, 2016 Mariana Morais faced off against Karol Rosa in a bantamweight bout at age 21. She was coming in with a record of 10-4 (9), and Rosa was 21 years old and with a record of 4-0 (1). Morais lost the fight via 3-round unanimous decision.
On September 12, 2015 Mariana Morais faced off against Roxanne Modafferi in a bantamweight bout at age 20. She was coming in with a record of 9-3 (8), and Modafferi was 32 years old and with a record of 17-12 (5). Morais lost the fight via 3rd-round TKO.
On August 24, 2014 Mariana Morais faced off against Luciana Pereira in a bantamweight bout at age 19. She was coming in with a record of 4-2 (4). Morais lost the fight via 3-round unanimous decision.
On May 10, 2014 Mariana Morais faced off against Jennifer Maia in a flyweight bout at age 19. She was coming in with a record of 4-1 (4), and Maia was 25 years old and with a record of 7-3-1 (5). Morais lost the fight via 2nd-round submission.
