Here is a list of Valdez Jr.'s best fights. For a list of Valdez Jr.'s losses, refer to "Óscar Valdez Jr. Losses".
On February 20, 2021 Óscar Valdez Jr. fought Miguel Berchelt in a super-featherweight world-title fight for Berchelt's WBC title. Valdez Jr. was 30 years old and with a record of 29-0 (23), and Berchelt was 29 years old and with a record of 38-1 (34). Valdez Jr. stopped Miguel Berchelt via 10th-round KO and is crowned the new super-featherweight world champion.
On September 22, 2017 Óscar Valdez Jr. met Genesis Servania in a featherweight (WBO) world-title defense fight. Valdez Jr. was 26 years old and with a record of 23-0 (19), and Servania was 26 years old and with a record of 29-0 (12). Valdez Jr. won the fight via 12-round unanimous decision and successfully defended his title.
On March 10, 2018 Óscar Valdez Jr. met Scott Quigg in a featherweight (WBO) world-title defense fight. Valdez Jr. was 27 years old and with a record of 24-0 (19), and Quigg was 29 years old and with a record of 34-1-2 (25). Valdez Jr. won the fight via 12-round unanimous decision and successfully defended his title.
On April 22, 2017 Óscar Valdez Jr. met Miguel Marriaga in a featherweight (WBO) world-title defense fight. Valdez Jr. was 26 years old and with a record of 22-0 (19), and Marriaga was 30 years old and with a record of 25-1 (21). Valdez Jr. won the fight via 12-round unanimous decision and successfully defended his title.
On September 10, 2021 Óscar Valdez Jr. met Robson Conceição in a super-featherweight (WBC) world-title defense fight. Valdez Jr. was 30 years old and with a record of 30-0 (23), and Conceição was 32 years old and with a record of 16-0 (8). Valdez Jr. won the fight via 12-round unanimous decision and successfully defended his title.
On November 15, 2014 Óscar Valdez Jr. faced off against Alberto Garza in a super-featherweight bout at age 23. He was coming in with a record of 13-0 (12), and Garza was 29 years old and with a record of 26-8-1 (21). Valdez Jr. stopped Alberto Garza via TKO.
On May 20, 2023 Óscar Valdez Jr. faced off against Adam Lopez in a super-featherweight bout at age 32. He was coming in with a record of 31-1 (23), and Lopez was 27 years old and with a record of 16-4 (6). Valdez Jr. won the fight via 10-round unanimous decision.
On November 30, 2019 Óscar Valdez Jr. faced off against Adam Lopez in a featherweight bout at age 28. He was coming in with a record of 27-0 (21), and Lopez was 23 years old and with a record of 13-1 (6). Valdez Jr. stopped Adam Lopez via TKO.
On March 29, 2024 Óscar Valdez Jr. faced off against Liam Wilson in a super-featherweight bout at age 33. He was coming in with a record of 32-2 (24), and Wilson was 28 years old and with a record of 13-2 (7). Valdez Jr. stopped Liam Wilson via TKO.
On July 21, 2020 Óscar Valdez Jr. faced off against Jayson Vélez in a featherweight bout at age 29. He was coming in with a record of 28-0 (22), and Vélez was 32 years old and with a record of 7-6-1 (5). Valdez Jr. stopped Jayson Vélez via TKO.