Leo Gámez has 12 losses against 11 opponents on his boxing record. For a list of Gámez's best fights, refer to "Best fights of Leo Gámez".
On December 22, 2005 Leo Gámez fought Prakorb Udomna in a bantamweight world-title fight for Udomna's WBA title. Gámez was 42 years old and with a record of 35-12-1 (26). Gámez lost the fight via 12-round unanimous decision.
On October 26, 2004 Leo Gámez faced off against Volodymyr Sydorenko in a bantamweight bout at age 41. He was coming in with a record of 34-11-1 (25). Gámez lost the fight via 12-round unanimous decision.
On October 4, 2003 Leo Gámez fought Hideki Todaka in a bantamweight world-title fight for Todaka's WBA title. Gámez was 40 years old and with a record of 34-10-1 (25), and Todaka was 30 years old and with a record of 20-3-1 (10). Gámez lost the fight via 12-round split decision.
On November 8, 2002 Leo Gámez fought Johnny Bredahl in a bantamweight world-title fight for Bredahl's WBA title. Gámez was 39 years old and with a record of 34-9-1 (25). Gámez lost the fight via 12-round unanimous decision.
On March 11, 2001 Leo Gámez met Celes Kobayashi in a super-flyweight (WBA) world-title defense fight. Gámez was 37 years old and with a record of 33-8-1 (25). Gámez lost the fight via 10th-round TKO and lost the title.
On September 3, 1999 Leo Gámez met Sornpichai Kratingdaenggym in a flyweight (WBA) world-title defense fight. Gámez was 36 years old and with a record of 32-7-1 (24). Gámez lost the fight via 9th-round KO and lost the title.
On October 7, 1996 Leo Gámez faced off against Aquiles Guzmán in a flyweight bout at age 33. He was coming in with a record of 29-6-1 (21). Gámez lost the fight via 12-round points decision.
On March 24, 1996 Leo Gámez fought Somchai Chertchai in a flyweight world-title fight for Chertchai's WBA title. Gámez was 32 years old and with a record of 29-5-1 (21). Gámez lost the fight via 12-round split decision.
On February 4, 1995 Leo Gámez met Choi Hi-Yong in a light-flyweight (WBA) world-title defense fight. Gámez was 31 years old and with a record of 27-4-1 (20). Gámez lost the fight via 12-round unanimous decision and lost the title.
On October 5, 1991 Leo Gámez fought Kim Yong Kang in a flyweight world-title fight for Kang's WBA title. Gámez was 28 years old and with a record of 20-3 (14). Gámez lost the fight via 12-round unanimous decision.
On November 10, 1990 Leo Gámez fought Yuh Myung-Woo in a light-flyweight world-title fight for Myung-Woo's WBA title. Gámez was 27 years old and with a record of 20-2 (14), and Myung-Woo was 26 years old and with a record of 34-0 (13). Gámez lost the fight via 12-round unanimous decision.
On April 29, 1990 Leo Gámez fought Yuh Myung-Woo in a light-flyweight world-title fight for Myung-Woo's WBA title. Gámez was 26 years old and with a record of 20-1 (14), and Myung-Woo was 26 years old and with a record of 33-0 (13). Gámez lost the fight via 12-round split decision.