Sumner is something of a late growing guard who currently stands around 6'4" and weighs in at about 155 after gaining 20 pounds over the course of the last year or so. The rail-thin righty can play both guard positions and protects the ball well off the bounce for someone so slight. He is capable of attacking off the bounce with either hand and can finish at the rim or drop it off with aplomb.
He also shows good range on his jump shot, demonstrating himself to be a threat a couple of steps beyond the line with a slightly low but fairly quick release. Adding weight to his frame is going to be Sumner's number one challenge as he heads through his senior year and on into college. He picked up early offers from schools like Kent State, Toledo, and UMass, but really started getting attention from the big boys as he got taller. Sumner obviously caught Xavier's eye, but Illinois, Michigan, and Michigan State were all actively pursuing the Beverly Hills, MI native. If he continues to develop and dodges all the usual hurdles between a verbal commitment and coming into the team, he has every chance of being a star for the Muskies in the Big East.