Entering Year 5, what should we make of Joe Mazzulla?

Boston, MA - May 2: Boston Celtics head coach Joe Mazzulla talks during his postgame press conference. The Boston Celtics and Philadelphia 76ers played in the first round of the NBA Playoffs at TD Garden on May 2, 2026. (Photo by Danielle Parhizkaran/The Boston Globe via Getty Images) | Boston Globe via Getty Images I recently started reading Bill Simmons’ The Book of Basketball, 17 years after it was published and several days after my partner asked why a book about basketball needed to b