Then, at the sound of a piercing whistle that made Percy wince, they were in the air, and Percy did not have time to wonder whether injuring your opposite number before the game started was technically a foul. He was instead occupied with just trying very hard not to get in the Chasers" way. Only vaguely was he aware of Lee yelling about how Angelina had the Quaffle. That was ... presumably good. He understood the rules of Quidditch, but less so the tactics, and had never been totally clear on the strategical problem of possession and Bludger attraction (apparently, the Bludgers unguided would preferentially attack the player with the Quaffle), because there were a bunch of complicated guidelines about whether or not it was good, in any given situation, to actually - Wait, he'd been told not to worry about that. He had a job, or something.