Tonight at 10:30 p.m. EDT, HBO has the main event from Boardwalk Hall in Atlantic City, as top featherweights Yuriorkis Gamboa and Daniel Ponce de Leon officially end the latest Cold War between Top Rank and Golden Boy.

Gamboa (20-0, 16 KO) and Ponce de Leon (41-3, 34 KO) are drastically different fighters to be sure, but both have a habit of making for good fights, and Gamboa should be considered must-see TV no matter who he's fighting. The Cuban dynamo has left his fellow defectors of recent years in the dust, becoming a regular HBO headliner and one of the most exciting, explosive fighters in the sport, possibly knocking on the door of real stardom with just a couple more good wins.

That could start here, but Ponce de Leon won't be in Atlantic City to lie down and roll over, either. The Mexican slugger did lose his last fight on March 5, but he stepped up to 130 pounds to face top prospect Adrien Broner, and many felt he deserved the win in a tightly-contested 10-round battle.

Join us tonight as we wrap up a big day of live coverage.