David Diaz’s Championship Ascent
On August 12, 2006, David Diaz stopped José Armando Santa Cruz in the tenth round to capture the interim WBC lightweight championship. Diaz later successfully defended his title against Erik Morales before losing to Manny Pacquiao in 2008.
Chicago amateur and Atlanta Olympian
Born in Chicago on June 7, 1976, Diaz built a strong amateur résumé at home, winning the Chicago Golden Gloves four times and the National Golden Gloves three times. He qualified for the 1996 U.S. Olympic team in the light-welterweight class, then listed at 139 pounds—not lightweight. At the Atlanta Games, he stopped Jacobo Garcia of the U.S. Virgin Islands in the third round before losing a 14–6 decision to Germany’s Oktay Urkal. Olympedia lists Diaz’s Olympic finish as equal ninth.
From a long unbeaten start to the WBC title
Diaz turned professional in 1996 and won his first 26 bouts, according to Olympedia. He captured the IBA lightweight title in 2005, then earned his first major world-title opportunity the following year. On August 12, 2006, he stopped José Armando Santa Cruz in the 10th round to win the WBC interim lightweight title. The WBC later elevated Diaz to full champion in February 2007; he did not beat Márquez for the belt.
Morales defense and the Pacquiao fight
Diaz made his first defense against Mexican star Erik Morales on August 4, 2007, at Allstate Arena in Rosemont, Illinois. Morales knocked him down in the opening round, but Diaz rallied and won a 12-round unanimous decision. The scorecards were 115–112, 115–113 and 114–113. The close, hard-fought result made Diaz a champion in front of a large crowd near his Chicago home.
His second defense became the defining night of his reign. BoxRec: Diaz–Pacquiao. On June 28, 2008, Manny Pacquiao stopped Diaz at 2:24 of the ninth round in Las Vegas to take the WBC lightweight title. Pacquiao’s speed and combinations had built a clear lead before the finish. The loss ended Diaz’s title run, but not his career.
A return home and a final run
Diaz returned to the ring in September 2009 and beat former world champion Jesús Chávez by majority decision in Chicago. He continued boxing through 2011, including a January decision win over Robert Frankel. His last recorded bout came on August 19, 2011, when Hank Lundy stopped him in the sixth round. Diaz finished with a 36–4–1 professional record and 17 knockouts. After boxing, he became a mentor to young people in Chicago, extending his connection to the city where his career began.
Diaz’s championship story is best remembered through the sequence of the Santa Cruz interim-title win, his promotion to full WBC champion, the Morales defense, and the Pacquiao loss. Those details preserve what he achieved while keeping the disputed or misattributed title history out of the account.
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David Diaz, Boxing, Boxing History, Championship Results
