Rising prospects Jonny Mansour and Julius Ballo will be part of the December 13 undercard of the WBC cruiserweight title rematch between Badou Jack and Noel Mikaelian. The pay-per-view card takes place at Ace Mission Studios in Los Angeles.

Mansour, 5-0 (2 KOs), of San Diego will face Marco Antonio Juarez Rodriguez, 12-9-3 (5 KOs), of Tijuana, Mexico in a lightweight bout, while his cousin Julius Ballo, 1-0, faces Kevin Walker, 2-3-1, of Cleveland in a six-round lightweight fight.

Ballo, a multiple-time national champion, is making his second pro appearance after shutting out Brandan Ayala over four rounds in July. Both Mansour and Ballo are promoted by OTX, while Ballo is co-promoted by Top Rank.

The card will also feature powerlifter Tristan Hamm, a powerlifting celebrity with nearly two million Instagram followers, looking for his first pro win when he faces Robert Daniels Jnr, 8-2 (7 KOs), in a four-round fight.

The co-featured fight will put Brook Sibrian, 8-2 (4 KOs), of Coachella, Calif. against Los Angeles' Gloria Munguilla, 8-2, in a ten-round bout for a minor WBC junior flyweight belt.