Seth Petruzelli has eight losses against eight opponents on his MMA record. For a list of Petruzelli's best fights, refer to "Best fights of Seth Petruzelli".
On June 19, 2013 Seth Petruzelli faced off against Muhammed Lawal in a light-heavyweight bout at age 33. He was coming in with a record of 14-8 (13), and Lawal was 32 years old and with a record of 9-2 (7). Petruzelli lost the fight via 1st-round KO.
On January 17, 2013 Seth Petruzelli faced off against Jacob Noe in a light-heavyweight bout at age 33. He was coming in with a record of 14-7 (13), and Noe was 32 years old and with a record of 9-1 (8). Petruzelli lost the fight via 1st-round TKO.
On November 13, 2010 Seth Petruzelli faced off against Karlos Vémola in a heavyweight bout at age 30. He was coming in with a record of 12-6 (11), and Vémola was 25 years old and with a record of 7-1 (6). Petruzelli lost the fight via 1st-round TKO.
On July 3, 2010 Seth Petruzelli faced off against Ricardo Romero in a heavyweight bout at age 30. He was coming in with a record of 12-5 (11), and Romero was 32 years old and with a record of 10-1 (9). Petruzelli lost the fight via 2nd-round submission.
On April 5, 2007 Seth Petruzelli faced off against Wilson Gouveia in a light-heavyweight bout at age 27. He was coming in with a record of 8-4 (7), and Gouveia was 28 years old and with a record of 7-4 (6). Petruzelli lost the fight via 2nd-round submission.
On October 10, 2006 Seth Petruzelli faced off against Matt Hamill in a light-heavyweight bout at age 26. He was coming in with a record of 7-3 (6), and Hamill was 30 years old and with a record of 2-0 (2). Petruzelli lost the fight via 3-round unanimous decision.
On June 30, 2001 Seth Petruzelli faced off against Gan McGee at age 21. He was coming in with a record of 1-2 (1), and McGee was 24 years old and with a record of 8-1 (7). Petruzelli lost the fight via 1st-round submission.
On June 9, 2001 Seth Petruzelli faced off against Mario Neto at age 21. He was coming in with a record of 1-1 (1). Petruzelli lost the fight via 1st-round submission.