Last weekend, I had the privilege of officiating 13U Travel / Competitive regional playoffs. As background, one of the teams was unhappy with the zone, as I like to keep it nice and tight because these kids are good, and they were irritated they weren't getting a lot of strike calls on pitches just missing.
I was consistent however one team (coaches, parents, players (especially the catcher)) where chirping called balls, although it quieted down after the 1st inning. No one came out of the dugout to argue, just loud groans and shouts to open the zone up and constant questioning on where the pitch missed/ catcher holding pitches too long.
Later, catcher comes to bat. Swings through the first pitch and fouls off the next to make it 0-2. Next pitch is a thigh-high fastball I call strike three. I keep my eye on the catcher and batter groans and walks away from the plate. About two seconds later, I hear a clank and turn around to realize the hitter threw hit bat off the backstop near his dugout in frustration. I didn't say anything, as I didn't feel like adding fuel to the fire on a borderline issue as I knew it would make the parents 10x worse (especially as a guy still in his teens who doesn't get the benefit of authority that adult umpires get). Plus, I didn't want to be a red-ass.
My question is, should this have been an EJ/ should I have taken any other action? I'm certain it's not the first and won't be the last time the player has done it.