Both fighters maintain perfect records—Zepeda at 33–0 with 27 knockouts and Stevenson at 23–0 with 11 KOs. Zepeda weighed 134.6 pounds and Stevenson 135 pounds at Friday’s weigh-in at Louis Armstrong Stadium. An obscene gesture by Stevenson toward Zepeda’s mother at the face-off prompted the challenger to promise retribution in the ring. The WBC lightweight title bout is set for 19:50 Mexico City time and will stream worldwide exclusively on DAZN pay-per-view. Edgar Berlanga vs. Hamzah Sheeraz and Subriel Matías vs. Alberto Puello headline the undercard.