By Edward Chaykovsky

Ringstar Sports, which is the new company run by former Golden Boy Promotions CEO Richard Schaefer, has finalized a Premier Boxing Champions doubleheader for December 10th at USC’s Galen Center in Los Angeles, California. Tom Brown of TGB Promotions is the co-promoter of the event.

Two titles fights will take place on the card. Former three division champion Abner Mares will finally collide with WBA 'regular' featherweight champion Jesus Cuellar in the main event. The co-feature, is the long awaited fight between International Boxing Federation super welterweight champion Jermall Charlo and mandatory challenger Julian Williams.

The card will be Schaefer's first boxing event since leaving Golden Boy back in June of 2014. Schaefer announced his return to the sport a few months ago.

Schaefer's debut of Ringstar was first pegged to take place on October 15th, with a rumored fight between Danny Garcia and Andre Berto in the main event at Staples Center, but the fight never came together with Garcia deciding to go in another direction.

Mares vs. Cuellar was originally set for June 25 in Brooklyn as part of the Keith Thurman-Shawn Porter undercard. The fell out at the last minute when the New York State Athletic Commission refused to give Mares medical clearance to fight - because of an issue with his medical history. The NYSAC is very strict when it comes to approving any fighter to compete when they've had eye surgery in the past.

Back in 2008, Mares had a detached retina and underwent a lasik procedure for his right eye. The California State Athletic Commission has evaluated Mares' health and vision through a series of exams.

“To do my first event from Galen Center is very meaningful because while I’ve been out, I’ve sent my two boys to USC, and these are the kinds of events I like to put together – two 50/50 fights in which the best fight the best,” Schaefer told The Los Angeles Times.