Jason Tan has three losses against three opponents on his MMA record. For a list of Tan's best fights, refer to "Best fights of Jason Tan".
On May 24, 2008 Jason Tan faced off against Dong Hyun Kim at age 26. He was coming in with a record of 5-3 (3), and Kim was 26 years old and with a record of 9-0-1 (6). Tan lost the fight via 3rd-round KO.
On June 16, 2007 Jason Tan faced off against Marcus Davis at age 25. He was coming in with a record of 4-2 (3), and Davis was 33 years old and with a record of 11-3 (8). Tan lost the fight via 1st-round KO.
On September 3, 2006 Jason Tan faced off against Jim Wallhead at age 24. He was coming in with a record of 4-1 (3). Tan lost the fight via 3-round split decision.
