Kostya Tszyu vs. Julio César Chávez, billed as A Matter of Pride, was a professional boxing match contested on July 29, 2000, for the WBC super lightweight title.

The announcement was met with controversy as it was felt that the soon-to-be-38-year old Chávez, who the WBC had ranked as their number-one super lightweight contender and, as such, Tszyu's mandatory challenger, was severely outmatched by Tszyu, who was 8 years younger and in the prime of his professional career.

"[2] Furthermore, then-Arizona senator John McCain, a noted detractor of combat sports, wrote a letter to Arizona governor Jane Dee Hull in which he called the fight "an illegitimate and potentially dangerous mismatch" in a failed attempt to have the fight cancelled.

[3] In order to get approved for the fight, Chávez had to submit the results of a medical exam and plead his case in person to the Arizona Boxing Commission.

Though Chávez answered the referee's 10-count, he was soon pinned against the ropes and after Tszyu landed several blows to his head, the referee stopped the fight halfway point of the round, giving Tszyu the victory by technical knockout.