Here is a list of Diaz's best fights. For a list of Diaz's losses, refer to "Joseph Diaz Losses".
On July 9, 2021 Joseph Diaz fought Javier Fortuna in a lightweight world-title fight for the WBC title. Diaz was 28 years old and with a record of 32-1-1 (15), and Fortuna was 31 years old and with a record of 36-2-1 (25). Diaz won the fight via 12-round unanimous decision and is crowned the new lightweight world champion.
On January 30, 2020 Joseph Diaz fought Tevin Farmer in a super-featherweight world-title fight for Farmer's IBF title. Diaz was 27 years old and with a record of 31-1 (15), and Farmer was 29 years old and with a record of 30-4-1 (6). Diaz won the fight via 12-round unanimous decision and is crowned the new super-featherweight world champion.
On July 11, 2015 Joseph Diaz faced off against Rene Alvarado at age 22. He was coming in with a record of 17-0 (10), and Alvarado was 26 years old and with a record of 22-4 (15). Diaz won the fight via 10-round unanimous decision.
On April 26, 2014 Joseph Diaz faced off against Luis Maldonado at age 21. He was coming in with a record of 10-0 (7), and Maldonado was 36 years old and with a record of 36-12-1 (27). Diaz won the fight via 6-round unanimous decision.
On May 4, 2019 Joseph Diaz faced off against Freddy Fonseca in a super-featherweight bout at age 26. He was coming in with a record of 29-1 (15). Diaz stopped Freddy Fonseca via TKO.
On December 18, 2015 Joseph Diaz faced off against Hugo Partida in a featherweight bout at age 23. He was coming in with a record of 19-0 (11). Diaz stopped Hugo Partida via TKO.
On July 30, 2016 Joseph Diaz faced off against Victor Proa in a featherweight bout at age 23. He was coming in with a record of 21-0 (12). Diaz stopped Victor Proa via KO.
