Last week’s brawl between the New York Mets and the St. Louis Cardinals resulted in a few players being suspended for one or more games. What caused the melee? After a tit for tat of dangerous throws between the two teams, Mets pitcher Yoan López sent a ball close to Cards batter Nolan Arenado's head – and for Arenado at least, that was a no-no. The two started screaming at each other, and the benches and bullpens were emptied as players rushed the field. But when you look at the causes for such fights, the unwritten rules presumably violated are inconsistent, and can vary greatly from one team to another’s interpretation. St. Louis Cardinals’ own star pitcher Jack Flaherty was fined for his role in the latest bust-up. He joins LZ and Will to talk about the culture surrounding these unwritten rules, and the gestures and dangerous plays that stoke the tension that sometimes leads to physical altercations.