Mazzulla hasn't hesitated to pull young players after mistakes. There were a lot of them in Monday's loss to the Jazz.

Past iterations of the Celtics could afford to take nights off and still sneak away with wins. There were nights when talent alone was enough, even if the effort wasn’t there for the full 48 minutes.

The Cavaliers will be shorthanded as they have three rotation players listed on the injury report ahead of their 7 p.m. Wednesday game against the Celtics. Darius Garland (toe surgery), Max Strus (left foot surgery) and Sam Merrill (right hip contusion) are all out, as is two-way wing Nae’Qwan Tomlin.

Outside of Brown, Jayson Tatum is the only other player on the team's injury report, as he continues to rehab following his Achilles tendon tear during the Eastern Conference semifinals loss to the New York Knicks last season. Beyond the star forwards, Mazzulla will have a fully healthy roster to choose from.

Here is the full injury report for Paul George and the Philadelphia 76ers as they take on the Boston Celtics on Friday to begin the NBA Cup.

Boston Celtics star shooting guard Jaylen Brown is questionable for the season opener vs. the 76ers as he recovers from a hamstring strain.

The Rockets will be at relative full strength as they face the Celtics at 8 p.m. Saturday at TD Garden. Only two players were listed on their injury report in Fred VanVleet and Dorian Finney-Smith. VanVleet is expected to be out for the year with a torn right ACL.

Jaylen Brown headlines the list of Celtics players to watch as Boston opens its preseason schedule in Memphis.

Rebounding has been a major flaw within the Boston Celtics roster to begin the season. Joe Mazzulla's team ranks 20th in the league for defensive rebounding and 18th for overall rebounding. In multiple games,