(Photo credit: David Banks-Imagn Images)

Dansby Swanson laced a walk-off single in the 10th inning to give the Chicago Cubs an 8-7 victory over the visiting Philadelphia Phillies and extend their winning streak to nine on Thursday.

Philadelphia lost its ninth straight game and now owns the worst record (8-17) in the National League.

Javier Assad (2-1) threw a perfect top of the 10th, before Tanner Banks (0-2) pitched the bottom of the frame for the Phillies. Banks intentionally walked Seiya Suzuki and allowed Carson Kelly's single to load the bases.

After Michael Busch struck out, Swanson's single to right ended it.

Busch homered and drove in four, while Suzuki went deep and Kelly produced three hits in the win.

With the score tied at six apiece in the bottom of the eighth, Suzuki launched his third homer in as many games, turning on a fastball from Philadelphia reliever Brad Keller.

The Phillies answered in the top of the ninth, as pinch-hitter Adolis Garcia hit his third homer of the season, knotting the score at 7-7 against Chicago's Caleb Thielbar.

Edward Cabrera allowed five runs (three earned) on six hits, striking out five and walking none for Chicago, which stamped a four-game sweep of Philadelphia and extended its longest winning streak since an 11-gamer in 2016.

Cristopher Sanchez started for the Phillies, allowing six runs on 12 hits across 5 1/3 innings, striking out four and walking two. Brandon Marsh went 3-for-4 with two homers in the loss.

The Phillies grabbed a 1-0 lead in the second inning on Marsh's third home run of the season.

Kelly and Busch reached to begin the bottom of the second for Chicago, before Swanson's sac fly knotted the score.

In the third, Suzuki and Kelly singled, leading to Busch's three-run homer, giving the Cubs a 4-1 edge.

Bryce Harper's one-out single in the fourth was followed with Marsh's RBI base hit, pulling the Phillies within two.

Chicago got the run back in the home half of the fourth, as Ian Happ hit his seventh of the year to push the lead to 5-2.

After allowing Happ's one-out single in the sixth, Sanchez was replaced by Chase Shugart. Suzuki singled and Kelly was hit by a pitch, before Busch's RBI groundout made it 6-2.

Marsh continued his stellar day with a one-out homer in the seventh to slice the deficit to three. Bryson Stott singled and Alec Bohm doubled, before Alex Bregman's throwing error allowed Stott to score from third. The visitors continued to inch closer, as Garrett Stubbs' sac fly pulled the Phillies within a run.

In relief of Cabrera, Hoby Milner walked a pair in 2/3 of an inning in the eighth. Jacob Webb entered with runners on first and second, allowing Edmundo Sosa's game-tying single.

--Field Level Media