Boston recalled Walsh from the G League's Maine Celtics on Friday, Justin Turpin of WEEI.com reports.
Walsh posted 13 points (5-15 FG), eight rebounds, three assists, a steal and a block during Game 2 of the G League Finals on Thursday, but Maine lost 89-99 to even the series at 1-1. The rookie is unlikely to receive significant playing time for Boston while in the NBA and should return to the G League ahead of Game 3 on Monday.