By Matt Audilet Prior to last night’s game between the San Francisco Giants and Cincinnati Reds, Reds outfielder Tommy Pham slapped Giants slugger Joc Pederson over a fantasy football dispute from this past season. During his postgame interview, Pederson detailed the confrontation between he and his former fantasy football league-mate. That description was the only detail the MLB world had on this spat — until now. An alleged video of the altercation has leaked on Twitter. Take a look here: Pham was scratched from the lineup after this pregame confrontation on Friday night. Following an MLB in…