After a debut fight on December 2012, Joseph Diaz (age 26) has now built a record of 15 wins, 1 losses, 0 draws over a 16 fight career so far. He started his best winning streak on December 2012 however, this came to an end on May 2017. In this period he won a total of 15 fights.
Setting up his pro career well and building his confidence in the pro ring, Diaz became the 5th person to take Vicente Alfaro the distance and claimed a UD debut win. Continuing on from his winning debut, Diaz's winning streak continued with wins against fighters included Luis Cosme, Noel Mendoza and Carlos Rodriguez fighting once in 2012 and 7 times in 2013.
On February 2nd, 2013 Diaz fought and beat Jose Ruiz (2-2-0) to continue his unbeaten streak. Diaz was the first person to stop Jose Ruiz and he did it in the 2nd round via TKO. Fights against Ruben Tamayo, Ramiro Robles, Luis Maldonado and 9 others followed where he won all 12 fights taking his winning streak to 14 wins.
Manuel Avila was beaten next on May 6th, 2017 meaning Diaz could maintain his unbeaten streak. A great showing of his boxing ability, Diaz became the first person to beat Manuel Avila, beating him over the 10 round distance resulting in a UD victory.
Joseph Diaz was defeated by Gary Russell jr on May 19th, 2018 in his next fight. Diaz was left wanting in his latest fight, being beaten over the 12 rounds to suffer his first professional loss in 16 pro fights.