MILWAUKEE (AP) — Bryce Harper hit a tiebreaking two-run homer in the sixth inning to back up the strong pitching of Zack Wheeler and the Philadelphia Phillies beat the Milwaukee Brewers 5-1 on Tuesday night in a matchup of division leaders.

Nick Castellanos added a solo shot and Trea Turner went 3 for 5 to help the Phillies move closer to wrapping up the NL East title while delaying the Brewers’ NL Central championship celebration.

The Phillies lowered their magic number for clinching the NL East to four. The Brewers’ magic number dropped to one with the Chicago Cubs 4-3 loss to the Oakland Athletics.

Wheeler (16-6) boosted his Cy Young Award credentials by allowing only four hits and one run in seven innings while striking out six and walking none. Wheeler, who lowered his ERA to 2.56, has given up no more than two runs in each of his last nine starts.

The score was tied at 1-all until Harper sent a 1-1 pitch from Frankie Montas over the wall in left-center for his 29th homer of the season. Harper’s two-run shot also scored Kyle Schwarber, who led off with an infield single.

Montas (7-11) struck out 10 batters in 5 2/3 innings while allowing three runs, six hits and two walks.

Philadelphia extended the lead to 4-1 in the seventh as Schwarber hit a ball that went off a leg of pitcher Aaron Ashby and headed into shallow right field for an RBI single after Edmundo Sosa’s leadoff double.

Turner added a two-out RBI single off Enoli Paredes in the ninth.

Castellanos led off the second inning with a 430-foot drive over the wall in left-center for his 21st homer of the season. The Phillies put runners on first and second later in the second before Montas struck out Cal Stevenson to end the inning.

The Brewers tied it in the fourth, as William Contreras singled and scored on Garrett Mitchell’s triple to right center, but the Brewers stranded Mitchell at third.

TRAINER’S ROOM

The Phillies reinstated Sosa from the 10-day injured list and optioned IF Buddy Kennedy to Triple-A Lehigh Valley. In another move, the Phillies sent C Aramis Garcia outright to Lehigh Valley after he cleared waivers. Garcia had been designated for assigment Sunday.

Manager Rob Thomson said OF Austin Hays ran at full intensity Tuesday for the first time since going on the injured list with a kidney infection on Sept. 5. Thomson said the infection has gone away.

UP NEXT

RHP Aaron Nola (12-8, 3.62 ERA) pitches for the Phillies and RHP Freddy Peralta (11-8, 3.75) starts for the Brewers when this three-game series concludes Wednesday night.