Ken Stone has four losses against four opponents on his MMA record. For a list of Stone's best fights, refer to "Best fights of Ken Stone".
On August 11, 2012 Ken Stone faced off against Érik Pérez in a featherweight bout at age 29. He was coming in with a record of 11-4 (9), and Pérez was 22 years old and with a record of 11-4 (9). Stone lost the fight via 1st-round KO.
On June 4, 2011 Ken Stone faced off against Scott Jorgensen in a featherweight bout at age 28. He was coming in with a record of 9-3 (9), and Jorgensen was 28 years old and with a record of 11-4 (5). Stone lost the fight via 1st-round KO.
On December 16, 2010 Ken Stone faced off against Eddie Wineland in a featherweight bout at age 28. He was coming in with a record of 9-2 (9), and Wineland was 26 years old and with a record of 17-6-1 (13). Stone lost the fight via 1st-round KO.
On June 5, 2009 Ken Stone faced off against Jason McLean in a featherweight bout at age 26. He was coming in with a record of 8-1 (8). Stone lost the fight via 5-round split decision.
