An extremely explosive and quick point guard, Mannion is a concentrate of energy and plays with amazing motor, he never stops on both ends of the court. He has impressive burst and leaping ability, being able to change speed out of nothing in the halfcourt and to score at the basket with power finishes. He has good ball-handling as well, can create separation with ease and bring the ball up against defensive pressure. He's a reliable shooter with the ability to pull up off the dribble, has quick release and huge elevation in his jump shot, has comfortable range from beyond the arc and can shoot coming out of the P&R; he tends to be streaky though, and his shot selection has to improve. Highly ball-dominant in his game, Mannion has good instincts as a passer but has to improve his overall timing and decision making.
On defense Mannion is extremely pesky, putting tireless pressure on the ball-handler and never giving up on a play. Has very quick hands and he's very aggressive attacking the ball and forcing turnovers; his explosiveness also make him a constant threat on passing lanes, where he loves to gamble to go in transition. He'll need to learn how to be more conservative sometimes on defense.
2016/17: Pinnacle HS (USA)
2017/18: Pinnacle HS (USA)
2018/19: Pinnacle HS (USA)
2019/20: Arizona (NCAA, USA)