During the match in Sorcerer's Stone in which Quirrell and Snape are jinxing and counter-jinxing Harry's broom, WHO "seized the quaffle and scored five times without anyone noticing?" (edited at 4:41 am, July 23, 2017 (AWST))
Original question: During the match in Sorcerer's Stone in which Quirrell and Snape are jinxing and counter-jinxing Harry's broom, WHO "seized the quaffle and scores five times without anyone noticing?"
Marcus Flint