As a rookie, the 19-year-old Walsh appeared in 19 games for the Boston Celtics and made 27 appearances for the Maine Celtics. With Boston, he only saw mop-up duty during the Celtics' frequent blowouts and averaged a modest 9.2 minutes per contest. With Maine, Walsh showed flashes of the high-motor Boston hopes will eventually make him rotation-worthy in the Association. In Maine, Walsh averaged 14.7 points, 7.5 boards, 0.9 steals, 0.8 blocks and 2.1 triples over 29.8 minutes per G League contest. He demonstrated high-energy defensive skills, including the ability to guard positions one through four. At 6-foot-7, Walsh's best path to meaningful NBA minutes will be via energetic 3-and-D play. The Celtics are focused on repeating as NBA champions. That probably means Walsh will again spend lots of time in Maine trying to improve on last year's 36.1 percent shooting from three-point range. But, should Boston experience significant injuries, Walsh could earn more meaningful minutes as a reserve.