Alec Bohm delivered a homer in the third.
Jose Alvarado collected his 10th save of the year with a perfect ninth inning.
Zach Wheeler allowing five runs (three earned) on eight hits and one walk while striking out six over seven innings.
The Phillies could clinch a playoff berth as early as Sunday as the club enters the day with a magic number of two. With a win and a Marlins loss, the Phillies will punch their ticket.
The magic number for the top Wild Card berth sits at three, an important figure as it ensures the Phillies will host a best-of-three series at Citizens Bank Park.
Assuming the Phillies secure the top Wild Card spot, they'll host the team that earns the second Wild Card berth. Entering Sunday, Arizona held the second spot, but the Cubs trail by just a half-game.
The Phillies went 4-3 against the Diamondbacks during the regular season, despite dropping two-of-three at home to the club back in late May.
The Phillies took two-of-three from the Cubs back in May at Citizens Bank Park.
Scheduling Update
Sunday's contest with the Mets has been moved to a 6:05pm start as rain is expected to continue in the Philadelphia area. The two clubs have an off day on Monday, so some flexibility exists if the weather deteriorates.
The Phillies host the Pirates for a mid-week three-game series before wrapping up the regular season next weekend at Citi Field with a set against the Mets.
