An emotional Mike Budenholzer struggled to sum up Giannis Antetokounmpo's incredible impact for the Milwaukee Bucks as the NBA Finals MVP looked on.

Antetokounmpo scored 50 points for the Bucks in Game 6 on Tuesday, inspiring a 105-98 win against the Phoenix Suns that clinched the team's first title in 50 years.

Coach Budenholzer was close to tears as he described his post-game celebrations with the team and was not entirely comfortable discussing Antetokounmpo's performance as the 'Greek Freak' himself waited for his own media duties.

But Budeholzer was keen to highlight the two-time MVP's display from the foul line, so often criticised in recent seasons.

A 50-point showing was the best of Antetokounmpo's playoff career – and the joint-best in the clinching game of a Finals series – and was boosted by a remarkable 17 made free throws from just 19 attempts.

Only three times in Antetokounmpo's career – regular season or playoffs – has he previously made more shots from the foul line.

This was his best return in a playoff game, ahead of the 16 made from 22 attempts against the Boston Celtics in 2019.

Antetokounmpo's 89.5 per cent free-throw shooting in Game 6 was way up on his playoff career average of 61.3, but Budenholzer insisted he had no doubts the 26-year-old would deliver.

"It's hard to find more words to describe what Giannis does," the coach said as Antetokounmpo waited in the room.

"But the way he made his free throws, the way he did everything, stepped up, the poise, the confidence, the leadership... he has been working on it.

"We say we want Giannis to get to the free throw line. We believe. We talked about it this past summer.

"To win a championship, you've got to make free throws and you've got to make shots. He's made shots throughout the playoffs. He's made free throws throughout the playoffs.

"[Five] blocked shots, however many points. He's off the charts. He's the MVP of the NBA Finals."

Antetokounmpo made seven of seven from the line and six of 10 from the field in the third quarter as he put up 20 points.

Having also scored 20 in the third quarter of Game 2, Antetokounmpo became the first player in the past 50 seasons to have multiple 20-point quarters in a Finals series.

"Mostly in halftime, we were talking about defense. We had 47 points against us and we think we can be better," Budenholzer said.

"But I think he embraces us being great defensively – Giannis does, the whole team [does].

"When we get stops and get out and run and get Giannis in space, get our team in space, I think he's special.

"He was able to put his stamp on the game in the third quarter and flip the score. And then some big plays in the fourth quarter – big plays, big blocks. It's hard to keep finding words for Giannis."