Roberto Valenzuela Jr. has five losses against five opponents on his boxing record. For a list of Valenzuela Jr.'s best fights, refer to "Best fights of Roberto Valenzuela Jr.".
On September 15, 2023 Roberto Valenzuela Jr. faced off against Xander Zayas in a super-welterweight bout at age 30. He was coming in with a record of 26-5 (24), and Zayas was 21 years old and with a record of 16-0 (10). Valenzuela Jr. lost the fight via 5th-round TKO.
On December 17, 2022 Roberto Valenzuela Jr. faced off against Bakhram Murtazaliev in a super-welterweight bout at age 29. He was coming in with a record of 25-4 (23), and Murtazaliev was 29 years old and with a record of 20-0 (15). Valenzuela Jr. lost the fight via 8-round unanimous decision.
On March 5, 2022 Roberto Valenzuela Jr. faced off against Souleymane Cissokho in a super-welterweight bout at age 28. He was coming in with a record of 24-3 (23), and Cissokho was 30 years old and with a record of 14-0 (9). Valenzuela Jr. lost the fight via 10-round unanimous decision.
On December 13, 2019 Roberto Valenzuela Jr. faced off against Alexis Rocha in a welterweight bout at age 26. He was coming in with a record of 16-2 (15), and Rocha was 22 years old and with a record of 14-0 (9). Valenzuela Jr. lost the fight via 5th-round retirement.
On April 12, 2019 Roberto Valenzuela Jr. faced off against Derek Silveira in a welterweight bout at age 25. He was coming in with a record of 13-1 (12). Valenzuela Jr. lost the fight via 8-round unanimous decision.
