assuming it wasn't trolling, my bet would be on self-styled hero boy took his shot, the pair denied statutory banging happened, yeah he patted her on the butt and gave her a shoulder massage but the girl denied unwanted advances, the principals and cops find nothing to see here, the captain skates, and our hero indignantly quits the team with encouragement. worse, possibly captain in retaliation drops his dime with whatever he knew about hero, hero gets tossed.
the hero's vibe on this is a little ethan krum season 2 of the tourist. like someone has kicked over from being a macho jerk to being a male feminist who actually usurps the female role while doing so. ask the girls if there is a problem here. if the girl or her team won't say anything bad is happening to you, then you're going nowhere making a fuss for them. and consider a little that in this day and age if it was unwanted someone female would probably have spoken up.
and i say that knowing the one time a fish girl propositioned me when i was a senior it felt like being hit on by a child. i can see the ick factor. but if the girl ain't beefing and the parents don't catch them, nothing's happening. they aren't getting rid of the captain if all you saw was a massage and a little grab-butt that no one involved is saying is unwanted. you're not getting his knuckles rapped unless a girl says he has a pattern of hitting on them and it's annoying. you're not getting him tossed unless it's pants down or called rape.