Head coach of the Boston Celtics Joe Mazzulla gives the instructions during the Toronto Raptors v Boston Celtics NBA regular season game at Scotiabank Arena in Toronto (Photo by Anatoliy Cherkasov/NurPhoto via Getty Images)
Head coach of the Boston Celtics Joe Mazzulla gives the instructions during the Toronto Raptors v Boston Celtics NBA regular season game at Scotiabank Arena in Toronto (Photo by Anatoliy Cherkasov/NurPhoto via Getty Images)