Zolak & Bertrand 11 hours ago Mazzulla ‘not concerned' about Jaylen Brown's hip flexor issue Joe Mazzulla joins “Zolak & Bertrand” and shares that he isn’t concerned about Jaylen Brown’s hip flexor strain being a major issue going forward this season. Celtics Videos 1:18 EXCLUSIVE: Tatum explains new approach to the first quarter 2:34 HIGHLIGHTS: Tatum's 26-point first half powers C's to 30-pt win 2:00 Report: Jaylen Brown set to have second MRI on hip flexor issue 1:27 Exclusive with Luke Kornet after putting up season-high 19 pts 2:40 HIGHLIGHTS: C's win both ends of the back-to-back vs. Hornets