The bout was held on February 28, 2009, at the Toyota Center in Houston, Texas, United States.

[1] Marquez won the fight via technical knockout in the ninth round.

Díaz controlled the fight early in the bout as the two boxers exchanged punches.

Díaz opened a cut above Márquez's right eye in the fifth round, and looked to control the bout, but Márquez responded by opening a gash above Diaz's right eye, and stunning him with a left hook before the end of the eighth round.

Referee Rafael Ramos waved an end to the fight after two minutes and 40 seconds of the ninth round.