Ian Heinisch has five losses against five opponents on his MMA record. For a list of Heinisch's best fights, refer to "Best fights of Ian Heinisch".
On July 24, 2021 Ian Heinisch faced off against Nassourdine Imavov in a middleweight bout at age 32. He was coming in with a record of 14-5 (7), and Imavov was 26 years old and with a record of 9-3 (7). Heinisch lost the fight via 2nd-round TKO.
On February 13, 2021 Ian Heinisch faced off against Kelvin Gastelum in a middleweight bout at age 32. He was coming in with a record of 14-4 (7), and Gastelum was 29 years old and with a record of 16-6 (11). Heinisch lost the fight via 3-round unanimous decision.
On December 14, 2019 Ian Heinisch faced off against Omari Akhmedov in a middleweight bout at age 31. He was coming in with a record of 13-3 (6), and Akhmedov was 32 years old and with a record of 19-4-1 (12). Heinisch lost the fight via 3-round unanimous decision.
On August 17, 2019 Ian Heinisch faced off against Derek Brunson in a middleweight bout at age 31. He was coming in with a record of 13-2 (6), and Brunson was 35 years old and with a record of 19-7 (14). Heinisch lost the fight via 3-round unanimous decision.
On September 8, 2017 Ian Heinisch fought Markus Perez in a middleweight title fight for the LFA Championship title. Heinisch was 29 years old and with a record of 8-1 (3), and Perez was 27 years old and with a record of 9-0 (6). Heinisch lost the fight via 1st-round submission.