Richard Crunkilton has four losses against four opponents on his MMA record. For a list of Crunkilton's best fights, refer to "Best fights of Richard Crunkilton".
On December 7, 2013 Richard Crunkilton faced off against Akhmet Aliev in a lightweight bout at age 34. He was coming in with a record of 19-4 (15). Crunkilton lost the fight via 1st-round KO.
On October 10, 2009 Richard Crunkilton faced off against Dave Jansen in a lightweight bout at age 29. He was coming in with a record of 18-3 (15), and Jansen was 30 years old and with a record of 12-0 (8). Crunkilton lost the fight via 3-round unanimous decision.
On September 5, 2007 Richard Crunkilton fought Rob McCullough in a lightweight title fight for McCullough's WEC Championship title. Crunkilton was 27 years old and with a record of 17-2 (15), and McCullough was 30 years old and with a record of 14-3 (11). Crunkilton lost the fight via 1st-round TKO.
On April 25, 2003 Richard Crunkilton faced off against Hermes França at age 23. He was coming in with a record of 11-1 (9), and França was 28 years old and with a record of 6-0 (6). Crunkilton lost the fight via 3-round unanimous decision.