They have yet to get in the ring together, but Floyd Mayweather and Marcos Maidana are already at each other's throats. The two champion boxers faced one another during a press conference in San Antonio to promote their September 13 rematch, where a shoving match ensued. 

Mayweather inched toward Maidana's face to stare him down and the Argentinian boxer put his hand on Floyd's chest to push him away. The Michigan-born boxer then shoved Maidana back, and security was quick to break up the scuffle. 

Check out the exclusive footage from FightHype.com in the above slide.

Source: bossip.com