Mia St. John has 14 losses against 12 opponents on her boxing record. For a list of St. John's best fights, refer to "Best fights of Mia St. John".
On May 17, 2014 Mia St. John faced off against Tori Nelson at age 46. She was coming in with a record of 47-14-2 (18). St. John lost the fight via 2nd-round TKO.
On April 13, 2013 Mia St. John fought Cecilia Brækhus in a welterweight world-title fight for Brækhus' WBA, WBC and WBO titles. St. John was 45 years old and with a record of 47-13-2 (18), and Brækhus was 31 years old and with a record of 21-0 (5). St. John lost the fight via 3rd-round TKO.
On November 10, 2012 Mia St. John faced off against Tiffany Junot in a super-welterweight bout at age 45. She was coming in with a record of 47-12-2 (18). St. John lost the fight via 10-round unanimous decision.
On March 20, 2010 Mia St. John faced off against Rola El-Halabi at age 42. She was coming in with a record of 45-11-2 (18). St. John lost the fight via 5th-round TKO.
On April 4, 2009 Mia St. John faced off against Brooke Dierdorff at age 41. She was coming in with a record of 45-10-2 (18). St. John lost the fight via 8-round unanimous decision.
On April 20, 2007 Mia St. John faced off against Brooke Dierdorff at age 39. She was coming in with a record of 43-9-2 (18). St. John lost the fight via 6-round split decision.
On February 9, 2007 Mia St. John faced off against Jaime Clampitt in a lightweight bout at age 39. She was coming in with a record of 43-8-2 (18). St. John lost the fight via 10-round unanimous decision.
On June 23, 2006 Mia St. John faced off against Jelena Mrdjenovich in a lightweight bout at age 38. She was coming in with a record of 43-7-2 (18), and Mrdjenovich was 23 years old and with a record of 16-1 (11). St. John lost the fight via 10-round unanimous decision.
On December 8, 2005 Mia St. John faced off against Holly Holm at age 38. She was coming in with a record of 42-6-2 (17). St. John lost the fight via 10-round unanimous decision.
On February 10, 2005 Mia St. John faced off against Jessica Rakoczy at age 37. She was coming in with a record of 40-5-2 (17). St. John lost the fight via 2nd-round TKO.
On April 15, 2004 Mia St. John faced off against Jessica Rakoczy at age 36. She was coming in with a record of 31-4-2 (13). St. John lost the fight via 8-round unanimous decision.
On April 19, 2003 Mia St. John faced off against Jenifer Alcorn at age 35. She was coming in with a record of 27-3-1 (13). St. John lost the fight via 8-round unanimous decision.
On December 6, 2002 Mia St. John faced off against Christy Martin at age 35. She was coming in with a record of 26-2-1 (13), and Martin was 34 years old and with a record of 44-2-2 (31). St. John lost the fight via 10-round unanimous decision.
On November 8, 2001 Mia St. John faced off against Rolanda Andrews at age 34. She was coming in with a record of 22-1-1 (12). St. John lost the fight via 2nd-round TKO.