BOSTON — The Celtics spent the days leading up to their playoff matchup with Miami talking about wanting to match the physicality of a team that would be looking for an edge without star Jimmy Butler.
Boston did that and then some.
Jayson Tatum notched his first career playoff triple-double with 23 points, 10 rebounds and 10 assists to lead Boston past the Miami Heat 114-94 on Sunday to open their first-round playoff series.
Derrick White added 20 points and four assists for Boston, which finished with six players in double-figures. The Celtics' lead grew as high as 34 points in the fourth quarter. Miami used a late run to get as close as 14, but Boston closed it out.
''It's supposed to be tough. In the playoffs no game is easy," Tatum said. "There's no guaranteed wins regardless of time and score, how much time is left. ... We just had to respond and we did that.''
Miami spoiled the Celtics' NBA finals dreams last season, jumping out to a 3-0 lead in the conference finals and then blowing them out in Boston in Game 7.
But Boston fed off the energy of the TD Garden crowd on Sunday, tying a franchise playoff record with 22 3-pointers and outscoring the Heat 31-14 in the third quarter.
''There was a four or five-minute stretch when we didn't handle it well, but I think the other 42-43 minutes — that's the recipe," Celtics coach Joe Mazzulla said.