Here is a list of Pierson's best fights. For a list of Pierson's losses, refer to "Sean Pierson Losses".
On September 22, 2012 Sean Pierson faced off against Lance Benoist in a welterweight bout at age 36. He was coming in with a record of 13-6 (10), and Benoist was 24 years old and with a record of 6-1 (5). Pierson won the fight via 3-round unanimous decision.
On December 11, 2010 Sean Pierson faced off against Matthew Riddle in a welterweight bout at age 34. He was coming in with a record of 11-4 (10). Pierson won the fight via 3-round unanimous decision.
On June 8, 2012 Sean Pierson faced off against Jake Hecht in a welterweight bout at age 36. He was coming in with a record of 12-6 (10), and Hecht was 28 years old and with a record of 11-3 (8). Pierson won the fight via 3-round unanimous decision.
On June 15, 2013 Sean Pierson faced off against Kenny Robertson in a welterweight bout at age 37. He was coming in with a record of 14-6 (10), and Robertson was 29 years old and with a record of 12-2 (11). Pierson won the fight via 3-round majority decision.
On October 9, 1999 Sean Pierson faced off against Steve Vigneault at age 23. He was coming in with a record of 1-0 (1). Pierson stopped Steve Vigneault via TKO.
On January 27, 2001 Sean Pierson faced off against Ali Nestor Charles in a welterweight bout at age 24. He was coming in with a record of 3-1 (3). Pierson stopped Ali Nestor Charles via submission.