Joe Mazzulla's training camp already testing Boston Celtics' limits

The Boston Celtics are redefining their training camp approach under coach Joe Mazzulla, who is pushing players to their limits with intense running and unique drills like capping the rim. How will this impact the Celtics' performance in the upcoming season? John Karalis of Boston Sports Journal and Tom Westerholm also discuss Mazzulla's relationship with Jayson Tatum, highlighting how missing out on the Finals MVP and limited Olympic play could fuel Tatum's drive this season. We also delve into rookie Baylor Schierman's development, focusing on his physical transformation and defensive skills, with a likely stint in the G League. Mazzulla's mental coaching strategies and the mysterious markings on the Celtics' practice court add layers to the team's evolving dynamics.