I'm an umpire and I would never seek to quell the players' normal exuberance for the game nor would I ever discourage players from cheering on their teammates but....
In the first inning:
Offensive Coach: "C'mon ump, you gotta stop that. He's throwing at my batters."
Ump: "Time" (beckons both coaches to the plate)
Ump (to Off. Coach): What's this about throwing at your batters?
Off. Coach: "He's hit three of the last four batters; he's doing it on purpose."
Ump (to Def. Coach): "Hey coach, when you had that conference with your pitcher after the first batter walked, did you tell him to throw at the batters?"
Def. Coach: "Heck no, ump. I wouldn't do that. That would be illegal. I just asked him if he was OK. He normally has pretty good control and since he walked the lead-off guy I wanted to check on him."
Ump (to Def. Coach): "Well, what did he say?"
Def. Coach: "He said that all of that normal exuberance and cheering on of their teammates that the other team was doing only when he pitched had him, well, a bit rattled. He said he'd be OK in another two or three innings."
Ump (to Off. Coach): "You know coach, the other guy just said that the normal exuberance being displayed by you team is only occurring when his pitcher is pitching. Your team isn't, by some wild stretch of the imagination, specifically trying to rattle the pitcher are they?"
Off. Coach: "Uhhh, no ump, not at all. They just get louder in support of their teammate when he's getting ready to hit."
Ump: "Well, that's good because that might be considered unsportsmanlike or an attempt to intimidate the pitcher and if that was true I'd have to tell you to make your kids stop doing that. Well, I guess it's all good then. The offense can continue to show their normal exuberance for the game and cheer on their teammates only when the pitcher is pitching and I guess we'll just have to be patient with the pitcher until he settles down in another two or three innings.
Ump (to Def. Coach): "Are you grinning?"