Terrence Ross scored 18 points, Gary Clark added 15 and DJ Augustin had 11 points and 11 assists for the eighth-seeded Magic.

Giannis Antetokounmpo finished with 31 points, 17 rebounds and seven assists for Milwaukee, but was held without a field goal over the final 11 minutes.

The Bucks came into the post-season as the favourites to win their first NBA title since 1971 despite finishing 3-5 in seeding games.

Milwaukee swept the season series against Orlando, winning four games by an average of 17 points, but struggled with the Magic's stingy defence, which repeatedly clogged the lane and forced Antetokounmpo to settle for jump shots.

The Bucks' frustration was evident when centre Brook Lopez stomped on a chair - and then kicked it - in the bench area during a timeout.

The Magic led most of the game.

Orlando used an early 15-2 run to build a 51-33 lead midway through the second quarter behind 16 points from Vucevic.

The Bucks bounced back to close the gap to 10 at halftime and made several runs in the second half but the Magic had an answer every time.

Milwaukee trimmed the lead to six in the fourth but Evan Fournier, who went scoreless for three quarters, buried the Bucks with three three-pointers in the final five minutes.

Jimmy Butler scored 28 points and Goran Dragic 24 as the Miami Heat beat the Indiana Pacers 113-101 in their Eastern Conference first-round series.

The Heat pulled away in the closing minutes, long after the Pacers had lost star guard Victor Oladipo to an eye injury.

Oladipo was limited to eight minutes before he was scratched in the left eye with 3:26 remaining in the first quarter, appearing to be hit first by Miami's Jae Crowder.

It was a three-point game midway through the final period before Butler hit a couple three-pointers and Dragic added one in an 11-2 surge.

James Harden had 37 points and 11 rebounds to help the Houston Rockets roll past Oklahoma City Thunder 123-108 in their first-round Western Conference playoff series.

Houston All-Star Russell Westbrook was out with a quad injury.

But the fourth-seeded Rockets still made 20 three-pointers and shot 48 per cent from the field to pull away in the third quarter.

The eighth-seeded Portland Trail Blazers beat the top-seeded Los Angeles Lakers 100-93, with Damian Lillard scoring 34 points in their Western Conference opening-round match.

CJ McCollum had 21 points and Jusuf Nurkic contributed 16 points and 15 rebounds for the Blazers. Carmelo Anthony added 11 points and 10 rebounds. Hassan Whiteside collected five blocks to go along with eight rebounds and seven points.

Anthony Davis finished with 28 points and 11 boards, while LeBron James had 23 points, 17 boards and 16 assists for the Lakers.

Australian Associated Press