Four-division world champion Adrien “The Problem’’ Broner and three-division world champion Mikey Garcia square off in a blockbuster matchup in the main event of SHOWTIME CHAMPIONSHIP BOXING®, Saturday, July 29, presented by Premier Boxing Champions at Barclays Center, the home of BROOKLYN BOXING™. Plus, unbeaten former world champion Jermall Charlo returns to face Argentina’s Jorge Sebastian Heiland in a middleweight world title eliminator. Additional undercard action will see former title challenger Gerald Washington take on Brooklyn native Jarrell “Big Baby” Miller in a 10-round heavyweight matchup.

IBF welterweight world Champion Errol Spence Jr. (24-0, 21 KOs) will defend his belt against four-division world champion and current WBC lightweight titlist Mikey Garcia (39-0, 30 KOs), who will move up two weight divisions to go for a world title in a fifth division in a meeting between two of boxing’s elite pound-for-pound best in the world.

Super lightweights Mikey Garcia and Sandor Martin will fight on Saturday October 16 in California. 33-year-old Garcia has suffered just one defeat over a 41-fight career, with his younger Spanish opponent, 28-year-old Martin, having fought just one time fewer.

For every boxing match, there are always two fights. One is against his opponent and one against his weight. Here Mikey Garcvia beats Juan Manual Lopez in the ring but leaves his featherweight title at the scales for failing to lose the necessary weight.

Three-division champ and current world featherweight titleholder Leo "El Terremoto" Santa Cruz (32-0-1, 18 KOs) puts his belt on the line against one of the UK's toughest fighters: undefeated Irishman Carl "The Jackal" Frampton (22-0, 14 KOs). Plus, undefeated former two-division champ Mikey Garcia (34-0, 28 KOs) returns to the ring against Elio Rojas (24-2, 14 KOs) and junior middleweights Tony Harrison (23-1, 19 KOs) and Sergey Rabchenko (27-1, 20 KOs) face off in a 12-round eliminator. Live from Brooklyn's Barclays Center.