Justin Jackson makes Boston Celtics opening-night roster Posted Oct 16, 2022 The Boston Celtics have put their finishing touches on their opening-night roster by keeping Justin Jackson on the 15-man roster. Jackson beat out Jake Layman and Brodric Thomas for the final roster spot with a pair of strong outings to close out the preseason. The 27-year-old forward finished with 16 points off the bench last week in just 23 minutes. (Mass Live)