Claudio Marrero has five losses against five opponents on his boxing record. For a list of Marrero's best fights, refer to "Best fights of Claudio Marrero".
On October 24, 2020 Claudio Marrero faced off against Xavier Martinez at age 31. He was coming in with a record of 24-5 (17), and Martinez was 22 years old and with a record of 15-0 (11). Marrero lost the fight via 12-round unanimous decision.
On February 8, 2020 Claudio Marrero faced off against Kid Galahad at age 30. He was coming in with a record of 24-4 (17), and Galahad was 29 years old and with a record of 26-1 (15). Marrero lost the fight via 8th-round retirement.
On January 26, 2019 Claudio Marrero faced off against Nyambayaryn Tögstsogt in a featherweight bout at age 29. He was coming in with a record of 23-3 (17), and Tögstsogt was 26 years old and with a record of 10-0 (9). Marrero lost the fight via 12-round unanimous decision.
On September 15, 2017 Claudio Marrero met Jesús Rojas in a featherweight (WBA) world-title defense fight. Marrero was 28 years old and with a record of 22-2 (16). Marrero lost the fight via 7th-round KO and lost the title.
On August 23, 2013 Claudio Marrero fought Jesús Cuellar in a featherweight world-title fight for Cuellar's WBA title. Marrero was 24 years old and with a record of 14-1 (11), and Cuellar was 26 years old and with a record of 22-1 (18). Marrero lost the fight via 12-round unanimous decision.