Milwaukee, meanwhile, has advanced to the conference finals and will take on either Toronto or Philadelphia.
So if you were waiting for any memorable post-game quotes from Irving after Game 5, they're here.
Irving will become a free agent July 1, has already expressed devotion to the Knicks as a local product and more than backed away from a training-camp vow to re-sign with Boston.
An early flameout underscored the Celtics failing to jell as a title contender all season after taking the Cavaliers to seven games in the Eastern Conference finals a year ago. Jayson Tatum and Marcus Morris each had 14.
"Honestly, I'm just looking forward to go back to Boston safely". But we're predicting the superstar has a down game offensively, which means others will need to step up.
There was one stretch in the second quarter where the Celtics could not buy a basket as Milwaukee built a double-digit lead. Boston had no chance to win shooting that way.
Harry and Meghan introduce baby Archie to the Queen
The Duke of Sussex was at his wife's side and mother and baby are both doing well, the palace said. It was posted after their first official appearance as a family of three at Windsor Castle.
Wednesday night's Game 5 against the Boston Celtics already held the potential to be a particularly momentous occasion for the Milwaukee Bucks, but the team looks set to receive a further boost ahead of the opening tip.
The Bucks responded by winning the next four games by an average of 15.75 points, including twice on the road. Does Boston have enough in the tank to push the series to Game 6? In Game 3, backups Pat Connaughton and George Hill gave Milwaukee an offensive boost. Add to that just one assist and three turnovers, plus 1-for-7 from three-point range. But Antetokounmpo led the way as the Bucks responded with four straight wins by a combined 65 points.
"I think collectively as a group, they outplayed us as a group and I give credit to them because they came after Game 1 getting punched in the mouth and they responded the way a team that deserves to win should".
The Bucks also got 10 points in 16 minutes from guard Malcolm Brogdon, who was returning from a heel injury that had sidelined him since March 15.
ESPN's Malika Andrews reports that the shooting guard's status has been upgraded to probable ahead of the team's Game 5 matchup against the Celtics tonight.