Júnior Assunção has seven losses against seven opponents on his MMA record. For a list of Assunção's best fights, refer to "Best fights of Júnior Assunção".
On May 26, 2018 Júnior Assunção faced off against Arman Tsarukyan in a lightweight bout at age 36. He was coming in with a record of 16-7 (11), and Tsarukyan was 21 years old and with a record of 11-1 (9). Assunção lost the fight via 3-round unanimous decision.
On July 30, 2016 Júnior Assunção faced off against Adam Townsend in a welterweight bout at age 35. He was coming in with a record of 16-6 (11). Assunção lost the fight via 1st-round TKO.
On December 30, 2011 Júnior Assunção faced off against Ross Pearson in a lightweight bout at age 30. He was coming in with a record of 13-5 (9), and Pearson was 27 years old and with a record of 12-5 (8). Assunção lost the fight via 3-round unanimous decision.
On May 30, 2008 Júnior Assunção faced off against Torrance Taylor at age 26. He was coming in with a record of 6-4 (6). Assunção lost the fight via 3-round unanimous decision.
On September 19, 2007 Júnior Assunção faced off against Nate Diaz at age 26. He was coming in with a record of 5-3 (5), and Diaz was 22 years old and with a record of 6-2 (6). Assunção lost the fight via 1st-round submission.
On October 14, 2006 Júnior Assunção faced off against Kurt Pellegrino at age 25. He was coming in with a record of 4-2 (4), and Pellegrino was 27 years old and with a record of 9-2 (7). Assunção lost the fight via 1st-round submission.
On April 23, 2004 Júnior Assunção faced off against Andrew Chappelle at age 22. He was coming in with a record of 0-1 (0). Assunção lost the fight via 3-round unanimous decision.
