Cruiserweight Marsellos Wilder, brother of WBC heavyweight champion Deontay, will compete on December 1 at The Staples Center.
As his elder sibling battles Tyson Fury in the Pay-Per-View headliner, 29 year-old Marsellos will be hoping to have bagged a third victory.
Turning pro in May, Marsellos has already scored two first round KO’s. Deontay believes his brother has similar power to his own.
Fans will now get the chance to see Marsellos in action for themselves as part of Showtime’s PPV coverage next month.
“I’m so excited, I’m so lit due to the fact that December 1 in L.A at the Staples Center I will be performing on the undercard of the number one Heavyweight Champion of the World Deontay Wilder versus the lineal Champion Tyson Fury,” confirmed Marsellos.
“I’m so honored by God for this. To be able to go to war alongside my big brother amd to showcase my talents in front of the whole world on PPV.
“I’m more than ready for this opportunity. I can’t wait to grab it, put it in choke hold and seize the moment.
“So If you can’t make it to the fight because you don’t wanna miss this here, just click that (PPV buy) button to see the Wilder brothers go on Showtime Boxing PPV,” he added.
The addition of Wilder (pictured above by DiBella Entertainment) sees the rumored undercard swell to six fights after the confirmation of Jarrett Hurd v Jason Welborn.
Welborn challenges Hurd for three version of the super-welterweight title. Luis Ortiz v Travis Kauffman and Joe Joyce v Joe Hanks are yet to be made official.
Former heavyweight title contender Chris Arreola and Fury friend Isaac Lowe make up the final two spots.
More bouts are expected to be added shortly.
