The NBA say Aron Baynes should have been whistled for a foul on Joel Embiid, with 14.6 seconds left in the semifinals between the Boston Celtics and the Philadelphia 76ers on Wednesday night.
Boston led 111-109, and after the game, Embiid – who would have gone to the line when the call was made – felt he was being fouled.
The league agreed in its "last two minutes review" on Thursday.
The Celtics went on to win 114-111 to take the series 4-1 and move forward to play the Cleveland Cavaliers in the East Finals.
"I mean the game unfolded, and I mean the refs, they had a great game, I thought they were great tonight," said Embiid. "But I mean, I felt there was something in this last game, but you can not really do anything about it, but they did a great job all night."
Joel Embiid and Ben Simmons are confident the 76ers are on the right track, despite being eliminated by the Celtics.
What's the best way for Philly to add another superstar piece? That's the way it will work.
The league also said that Marcus Smart traveled when he caught Ben Simmons' full-court hit at 1.5 seconds in the game. That would have given the Sixers the ball back with the chance of a go-ahead 3 or tie 2.
The Sixers left TD Garden with fierce disappointment after losing their second round.
But there was some underlying optimism about what might happen to Philadelphia. After winning just 23 percent of their games in the NBA draft over the past four seasons, the Sixers ended the regular season with 52 wins and won a playoff series for the first time since 2012.
But the Celtics surprised the Sixers – and the rest of the NBA – by winning the series in five games. Boston overtook Philadelphia in the time of the clutch, outperforming Sixers 51-39 as the games went five-point-ahead in the last five minutes.
"The process will never end," said Embiid. "This is a process to get to the playoffs, we did it, this was a process to get to the conference finals, which we did not do, next year, that's our goal."
Information from ESPN's Ian Begley and The Associated Press was used in this report.