Boston Celtics head coach Joe Mazzulla, left, talks with Chicago Bulls head coach Billy Donovan from the sideline at TD Garden. David Butler II-USA TODAY Sports

Chicago Bulls head coach Billy Donovan was not happy with how far the Boston Celtics were willing to go to boost their chances in the NBA in-season tournament.

The Celtics and Bulls faced off Tuesday for their fourth and final in-season tournament matchup at TD Garden in Boston.

The Celtics were up 111-79 after Al Horford sank a corner three-pointer with just over seven minutes left in the fourth quarter.

But the Celtics needed more than just a win to guarantee that they would advance in the in-season tournament. They also had to have a higher point differential than both the Orlando Magic and Brooklyn Nets, who were also playing simultaneously as the Celtics-Bulls game went on.

Instead of letting the lopsided contest run its course, Boston decided to intentionally foul Bulls center Andre Drummond to force him to shoot free throws. The two-time All-Star is a career 47.7% shooter from the charity stripe.

Donovan was not happy about the Celtics’ decision to foul Drummond. The Bulls coach confronted Celtics head coach Joe Mazzulla as Drummond headed to the free throw line.

Donovan was asked about his confrontation with Mazzulla during his postgame press conference. While the Bulls coach understood the implications the score had on the standings, Donovan believed that the tactic put Drummond in an uncomfortable situation.

“I just thought it was putting Drummond in a tough spot in a 30-point game. I didn’t like that. … I just felt bad for Andre,” said Donovan.

Donovan also added that the point differential aspect may potentially be putting players at risk in an all-but-decided game. He pointed to the fact that the Celtics still had Jayson Tatum and Jaylen Brown with a 30-point lead just to run up the score.

The Celtics ended up winning 124-97 to clinch East Group C of the in-season tournament. Their point differential was five points above the Magic and seven points above the Nets.

NBA stars have been vocal about their concern about the point differential wrinkle in the in-season tournament — including Tatum himself.

More must-reads:

TODAY'S BEST
Anthony Edwards backs up talk to keep Timberwolves alive in WCF
Championship-winning NASCAR team to shut down after 2024 season
Three takeaways as Panthers tie Eastern Conference Final vs. Rangers
Texans sign young offensive star to huge contract extension
Aaron Boone comes to the defense of retired umpire Angel Hernandez
Negro League legend finally getting his due as MLB merges stats
Several key players withdraw from NBA Draft
Tyrese Haliburton ready to take active role in retaining Pascal Siakam
Mets stars reportedly had emotional reaction to firing of Buck Showalter
NHL announces 2024 King Clancy Memorial Trophy winner
Cardinals sign first-round DL
Rams sign first-round DE, complete draft class
Steelers QB Justin Fields focusing on 'little things' amid battle with Russell Wilson
Pistons confirm that key RFA forward underwent toe surgery
Pirates place left-hander, catcher on injured list
Patriots exec discusses team's approach to QB competition
Braves to promote No. 3 prospect for MLB debut Wednesday
Diamondbacks release veteran infielder
Packers' former first-round pick planning to make 'monster leap'
NFLPA finalizing proposal for major change to offseason schedule