First-time father Bryan Reynolds hit a three-run homer in his return from paternity leave to lead the Pittsburgh Pirates past the Chicago Cubs 6-2 on Thursday.

Reynolds, who along with wife Blair welcomed son Reese on Monday, sent a drive off Alec Mills (3-3) into the seats in right field in the third inning for his third home run of the season to help Pittsburgh snap a four-game losing streak. Reynolds also doubled leading off the second and celebrated by pretending to rock a baby to sleep.

Cole Tucker added two hits, including a flare to left field in the sixth off reliever Jason Adams to give Pittsburgh plenty of cushion and boost rookie JT Brubaker (1-0) to his first major league win.

Brubaker navigated some traffic in five innings but avoided major damage, allowing one earned run on seven hits with a walk and five strikeouts.

Kyle Schwarber, Victor Caratini and Jason Kipnis had two hits apiece for the Cubs, but the NL Central leaders ended a 10-game, 12-day road trip with a thud. Mills gave up four runs in five innings as his ERA crept up to 5.50.

Ian Happ exited in the fourth inning with a right eye contusion when he was hit in the face by the ball after it bounced off the plate.

The Cubs start an eight-game homestand on Friday when they host St. Louis. Yu Darvish (6-1, 1.47 ERA), the NL Pitcher of the Month in August, will look to win his seventh straight decision when he faces Jack Flaherty (2-0, 1.93) in the opener.