Point guard Isaiah Thomas scored a team-high 33 points Sunday night in Game 1 of the Boston Celtics’ first-round playoff matchup with the Chicago Bulls, one day after the death of his sister in a one-car crash.

Thomas, overcome with emotions multiple times before the start of Sunday’s game, finished on 10-of-18 shooting with six assists and five rebounds over 38 minutes.

The Bulls emerged with a 106-102 triumph and lead the series 1-0. Game 2 is Tuesday night at TD Garden.

There was a moment of silence just prior to the playing of the national anthem before the 6:30 p.m. ET tipoff. Thomas bowed his head throughout, and tears dripped down his cheek.

He had led the team onto the floor and got a huge ovation from the Boston crowd. He was the last of the Celtics’ starters to be introduced and was immediately surrounded by all his teammates. His sneakers have his sister’s name, Chyna, written on them, along with “R.I.P. Lil Sis.”

There was a moment of silence just prior to the playing of the national anthem before the 6:30 p.m. ET tipoff. Thomas bowed his head throughout, and tears dripped down his cheek.

Before the game, Celtics coach Brad Stevens said the decision about whether the All-Star guard would play was up to Thomas, adding that “he’s really hurting” after his sister’s death.

“[Thomas] went through our shootaround. He is struggling,” Stevens said. “Obviously, it’s tragic circumstances that he and his family are going through right now, and our thoughts are, first and foremost, with all of them.

“I think his intention is to play. We’ve talked, a little bit last night and then again today, about as he goes through it, and if he feels like he needs to not [play], then whatever he wants. I think that one of the things that I’ve learned, having been through situations in the past, is that there’s really no right or wrong answer. It’s whatever’s right for him. That’s what we’ve encouraged him. And he’s really hurting. It’s a tough situation.”

Thomas received word that younger sister Chyna Thomas died early Saturday in a one-car crash on an interstate in their home state of Washington. She was 22. The Celtics’ All-Star guard was informed of her death after the team’s practice Saturday afternoon.

Stevens fielded five questions during his pregame news conference and all five were related to Thomas. Stevens said the Celtics have done all they can to console Thomas.

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SOURCE: ESPN, Chris Forsberg