What are the unwritten rules for slapping another man over a fantasy football feud?

Athletes: they’re just like us! They play fantasy football, they get pissed over fantasy football, they physically assault each other over fantasy football — you know, just guys being dudes!

A heated argument over nothing other than a fantasy league that Giants outfielder Joc Pederson and Reds outfielder Tommy Pham were in together resulted in Pham…