Augusto Sakai has six losses against six opponents on his MMA record. For a list of Sakai's best fights, refer to "Best fights of Augusto Sakai".
On June 7, 2024 Augusto Sakai fought Phil De Fries in a heavyweight title fight for De Fries' KSW Championship title. Sakai was 33 years old and with a record of 16-6-1 (11), and De Fries was 38 years old and with a record of 24-6 (19). Sakai lost the fight via 5-round unanimous decision.
On August 6, 2022 Augusto Sakai faced off against Serghei Spivac in a heavyweight bout at age 31. He was coming in with a record of 15-5-1 (11), and Spivac was 27 years old and with a record of 14-3 (11). Sakai lost the fight via 2nd-round TKO.
On December 11, 2021 Augusto Sakai faced off against Tai Tuivasa in a heavyweight bout at age 30. He was coming in with a record of 15-4-1 (11), and Tuivasa was 28 years old and with a record of 12-3 (11). Sakai lost the fight via 2nd-round KO.
On June 5, 2021 Augusto Sakai faced off against Jairzinho Rozenstruik in a heavyweight bout at age 30. He was coming in with a record of 15-3-1 (11), and Rozenstruik was 33 years old and with a record of 11-2 (10). Sakai lost the fight via 1st-round TKO.
On September 5, 2020 Augusto Sakai faced off against Alistair Overeem in a heavyweight bout at age 29. He was coming in with a record of 15-2-1 (11), and Overeem was 40 years old and with a record of 46-18 (41). Sakai lost the fight via 5th-round TKO.
On May 19, 2017 Augusto Sakai faced off against Cheick Kongo in a heavyweight bout at age 26. He was coming in with a record of 9-1-1 (7), and Kongo was 42 years old and with a record of 26-10-2 (16). Sakai lost the fight via 3-round split decision.