Boston looks lightning-fast as Tatum heals

Training camp tipped off with Joe Mazzulla stressing pace, and players like Payton Pritchard saying the Celtics are ‘flying.’ Jayson Tatum’s Achilles recovery is drawing optimism, while Xavier Tillman shed 12 pounds and Luka Garza is blending in quickly.

At this speed, the team bus might need a NASCAR pit crew just to park.