Ron Waterman has six losses against six opponents on his MMA record. For a list of Waterman's best fights, refer to "Best fights of Ron Waterman".
On June 14, 2008 Ron Waterman faced off against Dave Herman in a heavyweight bout at age 42. He was coming in with a record of 15-6-2 (13), and Herman was 23 years old and with a record of 12-0 (12). Waterman lost the fight via 1st-round TKO.
On December 2, 2006 Ron Waterman faced off against Roger Gracie in a heavyweight bout at age 41. He was coming in with a record of 13-5-2 (11), and Gracie was 25 years old and with a record of . Waterman lost the fight via 1st-round submission.
On July 22, 2006 Ron Waterman faced off against Ricco Rodriguez in a heavyweight bout at age 40. He was coming in with a record of 13-4-2 (11), and Rodriguez was 28 years old and with a record of 23-6 (19). Waterman lost the fight via 1st-round TKO.
On November 7, 2004 Ron Waterman fought Tsuyoshi Kohsaka in a heavyweight title fight for Kohsaka's Pancrase Super Championship title. Waterman was 38 years old and with a record of 12-3-2 (11), and Kohsaka was 34 years old and with a record of 25-15-2 (15). Waterman lost the fight via 3-round unanimous decision.
On February 1, 2004 Ron Waterman faced off against Mirko Cro Cop in a heavyweight bout at age 38. He was coming in with a record of 10-2-2 (9), and Cop was 29 years old and with a record of 7-1-2 (6). Waterman lost the fight via 1st-round TKO.
On July 16, 1999 Ron Waterman faced off against Andre Roberts at age 33. He was coming in with a record of 4-1 (4), and Roberts was 34 years old and with a record of 9-1 (8). Waterman lost the fight via 1st-round KO.
