Boston pushing pace as stars return strong

Training camp opened with the Celtics flying at ‘NASCAR pit stop’ speed, setting the tone for the season. Jayson Tatum continues strong Achilles rehab while Anfernee Simons embraces a key new role. Xavier Tillman, 12 pounds lighter, impressed with fresh energy.

Joe Mazzulla stressed hard work as veterans and newcomers settle in. The mood? Optimistic—though if the pace gets any faster, fans may need seatbelts just to watch practice.