Jaylen Brown scored 30 points and Payton Pritchard came off the bench to hit eight three-pointers en route to 28 points as the defending champions Boston beat Milwaukee 119-108 to remain perfect to start the NBA season.

Jayson Tatum added 15 points and eight rebounds for the Celtics (4-0), while Derrick White had 13 points and eight assists on Monday night (Tuesday AEDT) at TD Garden.

Damian Lillard led the Bucks (1-3) with 33 points, seven rebounds and seven assists and Giannis Antetokounmpo had 30 points, 10 boards and six assists.

Cleveland are also 4-0 after Darius Garland's season-high 34 points led the Cavaliers to a 110-104 win over the Knicks in New York.

Donovan Mitchell added 25 points, Evan Mobley had 17 and Jarrett Allen finished with 15 points and 15 rebounds for the Cavs, off to their best start since beginning their 2016 title defence 6-0.

Jalen Brunson had 21 points and seven assists for the Knicks (1-2), who led by 13 in the second half. Mikal Bridges scored 19 points, Josh Hart 16 and OG Anunoby 15. Karl-Anthony Towns fouled out with 13 points and 10 boards.

In Memphis, Australia's Josh Giddey registered 12 points, eight assists and 13 rebounds as Chicago came from behind to defeat the Grizzlies 126-123.

Zach LaVine scored 30 points for the Bulls, while Nikola Vucevic finished with 22 and Coby White 20.

Giddey's Boomers teammate Dyson Daniels compiled 11 points, three boards and one assist in Atlanta's 121-119 home loss to Washington.

Jordan Poole scored 26 points for the Wizards and Kyle Kuzma had a 25-point, 11-rebound double-double.

Jalen Johnson led the Hawks with 29 points and Trae Young missed a three-pointer at the buzzer to finish with 14 points, 13 assists and six turnovers.

Earlier in Orlando, Paolo Banchero had the best night of his career.

Banchero tied the Magic record for points in a half, scoring 37, against the Indiana Pacers. He finished with a career-high 50, tying the fifth-highest scoring effort in franchise history as Orlando won 119-115.

"Man, I'm tired. I'm tired as hell," he said after the first 50-point effort in the league this season.

"That first half was a magical first half ... it was just being in the zone.

"Felt like I was in an open gym, back at home, just working on my game. Every shot felt like it was going in and it's a good feeling when you've got a day like that."

Banchero, the league's rookie of the year two seasons ago and an All-Star last year, finished 16 of 26 from the floor. He also had 13 rebounds and nine assists.

In Sacramento, De'Aaron Fox scored 24 points and surpassed 10,000 for his career and DeMar DeRozan added 23 points as the Kings beat the Portland Trail Blazers 111-98 for their first win of the season.

Fox became the fifth player in franchise history to reach the 10,000-point mark when he made a three-pointer in the third quarter.

DeAndre Ayton had 20 points and 11 rebounds for the Blazers, joining Bill Walton as the only players in franchise history to start a season with four straight double-doubles.

Elsewhere, there were wins for Denver, Dallas, Miami, Houston and Phoenix.

With AAP.