Frank Shamrock has 10 losses against nine opponents on his MMA record. For a list of Shamrock's best fights, refer to "Best fights of Frank Shamrock".
On April 11, 2009 Frank Shamrock faced off against Nick Diaz in a middleweight bout at age 36. He was coming in with a record of 23-10-2 (15), and Diaz was 25 years old and with a record of 18-7 (15). Shamrock lost the fight via 2nd-round TKO.
On March 29, 2008 Frank Shamrock met Cung Le in a middleweight (Strikeforce Championship) title defense fight. Shamrock was 35 years old and with a record of 23-9-2 (15), and Le was 35 years old and with a record of 5-0 (5). Shamrock lost the fight via 3rd-round TKO and lost the title.
On February 10, 2007 Frank Shamrock faced off against Renzo Gracie in a middleweight bout at age 34. He was coming in with a record of 22-8-2 (15), and Gracie was 39 years old and with a record of 12-6-1 (9). Shamrock lost the fight via 2-round disqualification.
On January 17, 1997 Frank Shamrock faced off against John Lober at age 24. He was coming in with a record of 11-7-1 (8), and Lober was 28 years old and with a record of 2-0-1 (2). Shamrock lost the fight via 1-round split decision.
On December 15, 1996 Frank Shamrock faced off against Kiuma Kunioku at age 24. He was coming in with a record of 11-6-1 (8), and Kunioku was 20 years old and with a record of 5-3-2 (3). Shamrock lost the fight via 1-round unanimous decision.
On September 7, 1996 Frank Shamrock faced off against Yuki Kondo at age 23. He was coming in with a record of 11-5-1 (8), and Kondo was 21 years old and with a record of 6-0-1 (2). Shamrock lost the fight via 1st-round KO.
On May 16, 1996 Frank Shamrock fought Bas Rutten in a null title fight for Rutten's Pancrase Openweight Championship title. Shamrock was 23 years old and with a record of 10-4-1 (7), and Rutten was 31 years old and with a record of 16-4 (14). Shamrock lost the fight via 1st-round TKO.
On July 23, 1995 Frank Shamrock faced off against Bas Rutten at age 22. He was coming in with a record of 4-3-1 (3), and Rutten was 30 years old and with a record of 10-4 (9). Shamrock lost the fight via 1-round split decision.
On March 10, 1995 Frank Shamrock faced off against Masakatsu Funaki at age 22. He was coming in with a record of 2-2 (1), and Funaki was 25 years old and with a record of 13-3 (12). Shamrock lost the fight via 1st-round submission.
On December 16, 1994 Frank Shamrock faced off against Manabu Yamada at age 22. He was coming in with a record of 1-1 (0), and Yamada was 25 years old and with a record of 12-5-2 (12). Shamrock lost the fight via 1st-round submission.