The Boston Celtics survived a historic performance from Giannis Antetokounmpo as Jayson Tatum scored 46 points to carry his side to a 108-95 win, tying the series at 3-3 and forcing a Game 7 in Boston.

Antetokounmpo became the first player since Shaquille O'Neal over 20 years ago to eclipse a playoff stat-line of 40 points and 20 rebounds, finishing with 44 points on 14-of-30 shooting, going 14-of-15 from the free throw line and an even 20 boards. He also added six assists, two blocks and one steal.

But Tatum was matching him every step of the way on the offensive end, shooting 17-of-32 from the field and seven-of-15 from long range, with nine rebounds and four assists to go with his 46.

It was a game that the Celtics controlled from the second quarter, restricting the Bucks to 17 points in the frame to grab a 10-point half-time lead, and although the home side made runs, Boston had all the answers.

The Bucks were a one-man show, but the Celtics had a number of solid contributors as Jaylen Brown shot seven-of-16 from the field and four-of-seven from deep for his 22 points, while Marcus Smart shot eight-of-16 and five-of-nine from beyond the arc for his 21.

Al Horford finished with just two points, but had a game-high four blocks and a team-high 10 rebounds as he made Antetokounmpo battle all day inside, while Derrick White also chipped in with 30 important minutes off the bench, complimenting the stars perfectly.

Jrue Holiday and Pat Connaughton were the only other Bucks to score more than six points as Milwaukee shot 40 per cent from the field and 24 per cent from three (seven-of-29).

'Game 6 Klay' returns to clinch series 

The Golden State Warriors booked their trip to the Western Conference Finals with a 110-96 win in Game 6 of their series against the Memphis Grizzlies, advancing with a 4-2 margin.

To the Grizzlies' credit, without Ja Morant, they stayed competitive through three quarters, before a 32-19 final frame for the Warriors put the game to bed.

While most Warriors players rose to the occasion, none played better than Klay Thompson, who lived up to his glittering reputation in Game 6s with 30 points, shooting 11-of-22 from the field and eight-of-14 from long range.

Stephen Curry added 29 points on 10-of-27 shooting, adding seven rebounds and five assists, while Andrew Wiggins was strong on both ends, scoring 18 points, grabbing 10 rebounds and blocking three shots.

After being bullied on the interior in Game 5, the Warriors re-injected Kevon Looney into the rotation, and he collected a game-high 22 rebounds in 35 minutes, while Draymond Green had 14 points, 16 rebounds and eight assists.

The Warriors will play the winner of the Game 7 showdown between the Phoenix Suns and the Dallas Mavericks.