Rob McCullough has eight losses against eight opponents on his MMA record. For a list of McCullough's best fights, refer to "Best fights of Rob McCullough".
On September 24, 2011 Rob McCullough faced off against Shinya Aoki in a lightweight bout at age 34. He was coming in with a record of 19-8 (13), and Aoki was 28 years old and with a record of 28-5 (18). McCullough lost the fight via 1st-round submission.
On March 12, 2011 Rob McCullough faced off against Patricky Freire in a lightweight bout at age 33. He was coming in with a record of 19-7 (13). McCullough lost the fight via 3rd-round TKO.
On November 18, 2009 Rob McCullough faced off against Karen Darabedyan in a lightweight bout at age 32. He was coming in with a record of 17-6 (12), and Darabedyan was 22 years old and with a record of 8-1 (4). McCullough lost the fight via 3-round split decision.
On November 5, 2008 Rob McCullough faced off against Donald Cerrone in a lightweight bout at age 31. He was coming in with a record of 16-5 (12), and Cerrone was 25 years old and with a record of 8-0 (8). McCullough lost the fight via 3-round unanimous decision.
On February 13, 2008 Rob McCullough met Jamie Varner in a lightweight (WEC Championship) title defense fight. McCullough was 30 years old and with a record of 15-4 (12), and Varner was 23 years old and with a record of 13-2 (11). McCullough lost the fight via 3rd-round TKO and lost the title.
On January 16, 2004 Rob McCullough faced off against Harris Sarmiento at age 26. He was coming in with a record of 6-3 (4). McCullough lost the fight via 3-round split decision.
On November 23, 2002 Rob McCullough faced off against Josh Thomson at age 25. He was coming in with a record of 2-2 (2), and Thomson was 24 years old and with a record of 4-0 (4). McCullough lost the fight via 3-round unanimous decision.
On March 30, 2002 Rob McCullough faced off against Kenneth Alexander at age 24. He was coming in with a record of 2-1 (2). McCullough lost the fight via 4-round unanimous decision.
