Gregorio Vargas has nine losses against nine opponents on his boxing record. For a list of Vargas's best fights, refer to "Best fights of Gregorio Vargas".
On November 6, 2004 Gregorio Vargas faced off against Eleazar Contreras Jr in a lightweight bout at age 34. He was coming in with a record of 45-9-1 (31). Vargas lost the fight via 12-round unanimous decision.
On December 11, 2003 Gregorio Vargas faced off against Mike Anchondo at age 33. He was coming in with a record of 44-8-1 (30). Vargas lost the fight via 10-round unanimous decision.
On March 18, 2000 Gregorio Vargas fought Floyd Mayweather Jr. in a super-featherweight world-title fight for Mayweather Jr.'s WBC title. Vargas was 29 years old and with a record of 40-7-1 (28), and Mayweather Jr. was 23 years old and with a record of 22-0 (17). Vargas lost the fight via 12-round unanimous decision.
On January 13, 1997 Gregorio Vargas faced off against Carlos Hernández at age 26. He was coming in with a record of 34-6-1 (24), and Hernández was 25 years old and with a record of 22-1-1 (13). Vargas lost the fight via 10-round majority decision.
On April 22, 1994 Gregorio Vargas fought John John Molina in a super-featherweight world-title fight for Molina's IBF title. Vargas was 23 years old and with a record of 29-5-1 (20), and Molina was 29 years old and with a record of 34-3 (25). Vargas lost the fight via 12-round unanimous decision.
On December 4, 1993 Gregorio Vargas met Kevin Kelley in a featherweight (WBC) world-title defense fight. Vargas was 23 years old and with a record of 29-4-1 (20), and Kelley was 26 years old and with a record of 36-0 (26). Vargas lost the fight via 12-round unanimous decision and lost the title.
On May 5, 1990 Gregorio Vargas faced off against Juan Carlos Salazar at age 19. He was coming in with a record of 16-3 (11). Vargas lost the fight via 10-round unanimous decision.
On August 18, 1989 Gregorio Vargas faced off against Jaime Fernandez at age 18. He was coming in with a record of 13-2 (10). Vargas lost the fight via 10-round points decision.
On April 28, 1989 Gregorio Vargas faced off against Marco Antonio Ramirez at age 18. He was coming in with a record of 11-1 (9). Vargas lost the fight via 6th-round TKO.