2004-05-13 Julio Diaz w pts 12 Javier Jauregui, Sports Arena, San Diego, California, USA - IBF
2004-05-13 Julio Diaz w pts 12 Javier Jauregui, Sports Arena, San Diego, California, USA - IBF. Referee: Raul Caiz. Scorecards: 118-110, 118-110, 114-114. Quicker, slicker and much younger than the champion, Diaz (134¾) won the opening five rounds with ease as he frequently switched from orthodox to southpaw and back again, while slotting the jab in. When Jauregui (134¼) landed then Diaz would come back with more, but although occasionally shaking his rival up with left hooks the latter never looked like getting the job done early, ultimately having to settle for the points. With Diaz losing three rounds at most it was strange that one of the judges made the fight a draw, but luckily for the new champion the other two officials were on the ball.
Diaz handed in his belt in February 2005 to challenge Jose Luis Castillo for the WBC crown, in favour of making a defence against Leavander Johnson for less money. Following that, Johnson was matched against the European champion, Stefano Zoff, in an effort to find a new champion.