Glenn Robinson had 25 points and 10 rebounds as the Bucks broke a four-game losing streak by beating the undermanned Magic 110-85 on Sunday.
The Bucks shot 62.3 percent through three quarters to build the lead as large as 27. Orlando played without the injured Tracy McGrady and two other top scorers, then lost Troy Hudson in the third quarter after he took a hard spill.
"The first half, I thought we made some mental mistakes," Orlando coach Doc Rivers said. "Eventually, the dam broke and we didn't have enough fingers to plug the holes."
Sam Cassell added 21 points for the Bucks. Darrell Armstrong led the Magic with 17.
The victory gave Milwaukee a 2-1 win in the season series and the tiebreaker advantage for playoff position.
"I'm pretty sure there's going to be one tie, maybe two," Milwaukee coach George Karl said. "So it's good to have as many (tiebreakers) as we can have."
McGrady, the NBA's fourth-leading scorer (25.4 points), missed the game after back spasms forced him out of Friday's game against Charlotte. The Magic already was without Mike Miller (15.8 points), who is out with a sprained ankle, and Grant Hill (16.8 points), who has missed most of the season after ankle surgery.
The Bucks made their first six shots to take a 13-2 lead. The margin grew to 31-19 at the end of the first quarter. Orlando got within 35-30 midway through the second quarter, but baskets from Michael Redd and Greg Anthony slowed that threat.
Milwaukee shot 59.5 percent from the field in the first half and led by as many as 18, ending the half with a 57-44 lead.
The margin grew to 89-62 on a long jumper by Robinson midway through the third quarter.
Robinson, whose bruised tailbone kept him out of Friday's 108-84 loss at New Jersey, hit 10 of 13 shots from the field.
"(Robinson) had a great rhythm all night long," Karl said. "Had I put him back in he could've had an even bigger night. I thought it was important to give him and some of the other guys some rest, though."
McGrady did not travel with the Magic to Milwaukee, but Rivers said he might play Tuesday against Chicago. Rivers said the worst-case scenario has McGrady missing Tuesday and Wednesday (against Charlotte), then returning Friday against Indiana.
Hudson was injured when he went high for a Cassell shot fake, flipped over Cassell's shoulder on the way down and landed hard on his back. He complained of a sore lower back and will be re-evaluated when the team returns to Orlando.