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 second 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.

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Pittsburgh Pirates' Bryan Reynolds watches his three-run home run off Chicago Cubs starting pitcher Alec Mills during the third inning of a baseball game in Pittsburgh, Thursday, Sept. 3, 2020. (AP PhotoGene J. Puskar)

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.
Chicago Cubs' Ian Happ (8) reacts to fouling a pitch from Pittsburgh Pirates starting pitcher JT Brubaker off his head during the fourth inning the team's baseball game in Pittsburgh, Thursday, Sept. 3, 2020. Happ was examined by a team trainer and left the game. (AP PhotoGene J. Puskar)

Kyle Schwarber, Victor Caratini and Jason Kipnis had two hits apiece for the Cubs, but the NL Central leaders ended a 5-5, 12-day road trip with a thud. Mills gave up four runs in five innings as his ERA crept up to 5.50.
Chicago Cubs' Ian Happ, center, leaves the game between manager David Ross, left, and a team trainer after fouling a pitch off his head during the fourth inning the team's baseball game against the Pittsburgh Pirates in Pittsburgh, Thursday, Sept. 3, 2020. (AP PhotoGene J. Puskar)

Mills' fourth pitch to Reynolds ended up over the Clemente Wall in right and the Pirates were on their way to avoiding a four-game sweep.
Chicago Cubs starting pitcher Alec Mills delivers during the first inning of the team's baseball game against the Pittsburgh Pirates in Pittsburgh, Thursday, Sept. 3, 2020. (AP PhotoGene J. Puskar)

TRAINER'S ROOM
Chicago Cubs' Ian Happ fouls a pitch from Pittsburgh Pirates starting pitcher JT Brubaker off his head during the fourth inning the team's baseball game in Pittsburgh, Thursday, Sept. 3, 2020. Happ was examined by a team trainer and left the game. (AP PhotoGene J. Puskar)

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Pittsburgh Pirates starting pitcher JT Brubaker delivers during the first inning of the team's baseball game against the Chicago Cubs in Pittsburgh, Thursday, Sept. 3, 2020. (AP PhotoGene J. Puskar)

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Pittsburgh Pirates' Bryan Reynolds watches his three-run home run off Chicago Cubs starting pitcher Alec Mills during the third inning of a baseball game in Pittsburgh, Thursday, Sept. 3, 2020. (AP PhotoGene J. Puskar)

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.

Chicago Cubs' Ian Happ (8) reacts to fouling a pitch from Pittsburgh Pirates starting pitcher JT Brubaker off his head during the fourth inning the team's baseball game in Pittsburgh, Thursday, Sept. 3, 2020. Happ was examined by a team trainer and left the game. (AP PhotoGene J. Puskar)

Kyle Schwarber, Victor Caratini and Jason Kipnis had two hits apiece for the Cubs, but the NL Central leaders ended a 5-5, 12-day road trip with a thud. Mills gave up four runs in five innings as his ERA crept up to 5.50.

Chicago Cubs' Ian Happ, center, leaves the game between manager David Ross, left, and a team trainer after fouling a pitch off his head during the fourth inning the team's baseball game against the Pittsburgh Pirates in Pittsburgh, Thursday, Sept. 3, 2020. (AP PhotoGene J. Puskar)

Mills' fourth pitch to Reynolds ended up over the Clemente Wall in right and the Pirates were on their way to avoiding a four-game sweep.

Chicago Cubs starting pitcher Alec Mills delivers during the first inning of the team's baseball game against the Pittsburgh Pirates in Pittsburgh, Thursday, Sept. 3, 2020. (AP PhotoGene J. Puskar)

TRAINER'S ROOM

Chicago Cubs' Ian Happ fouls a pitch from Pittsburgh Pirates starting pitcher JT Brubaker off his head during the fourth inning the team's baseball game in Pittsburgh, Thursday, Sept. 3, 2020. Happ was examined by a team trainer and left the game. (AP PhotoGene J. Puskar)

UP NEXT

Pittsburgh Pirates starting pitcher JT Brubaker delivers during the first inning of the team's baseball game against the Chicago Cubs in Pittsburgh, Thursday, Sept. 3, 2020. (AP PhotoGene J. Puskar)

More AP MLB: https://apnews.com/MLB and https://twitter.com/AP_Sports

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.

Pittsburgh Pirates' Bryan Reynolds watches his three-run home run off Chicago Cubs starting pitcher Alec Mills during the third inning of a baseball game in Pittsburgh, Thursday, Sept. 3, 2020. (AP PhotoGene J. Puskar)

Pittsburgh Pirates' Bryan Reynolds watches his three-run home run off Chicago Cubs starting pitcher Alec Mills during the third inning of a baseball game in Pittsburgh, Thursday, Sept. 3, 2020. (AP PhotoGene J. Puskar)

Kyle Schwarber, Victor Caratini and Jason Kipnis had two hits apiece for the Cubs, but the NL Central leaders ended a 5-5, 12-day road trip with a thud. Mills gave up four runs in five innings as his ERA crept up to 5.50.

Chicago built a 2-0 lead through three innings thanks in part to some sloppy defense by the Pirates as third baseman JT Riddle's throwing error — Pittsburgh's major league-high 34th of the season — allowed Kipnis to score. Yet Brubaker worked around the trouble without further damage.

Mills wasn't as fortunate in the bottom of the inning. Erik Gonzalez's sacrifice fly put the Pirates on the board and a single by Gregory Polanco put runners on the corner with two outs. Cubs pitching coach Tommy Hottovy came out to talk to Mills before Reynolds stepped in.

Chicago Cubs' Ian Happ (8) reacts to fouling a pitch from Pittsburgh Pirates starting pitcher JT Brubaker off his head during the fourth inning the team's baseball game in Pittsburgh, Thursday, Sept. 3, 2020. Happ was examined by a team trainer and left the game. (AP PhotoGene J. Puskar)

Chicago Cubs' Ian Happ (8) reacts to fouling a pitch from Pittsburgh Pirates starting pitcher JT Brubaker off his head during the fourth inning the team's baseball game in Pittsburgh, Thursday, Sept. 3, 2020. Happ was examined by a team trainer and left the game. (AP PhotoGene J. Puskar)

Mills' fourth pitch to Reynolds ended up over the Clemente Wall in right and the Pirates were on their way to avoiding a four-game sweep.

ON THE MOVE

The Cubs continued to shuffle their roster after splurging on reinforcements at the trade deadline. Chicago assigned outfielder Ian Miller and catcher Josh Phegley to their alternate site in South Bend after both cleared waivers. The Cubs also released former Indians closer Cody Allen and right-handed reliever A.J. Ramos. Allen signed a minor league deal in July. Ramos signed a minor league deal earlier this week after being released by the Los Angeles Dodgers.

Chicago Cubs' Ian Happ, center, leaves the game between manager David Ross, left, and a team trainer after fouling a pitch off his head during the fourth inning the team's baseball game against the Pittsburgh Pirates in Pittsburgh, Thursday, Sept. 3, 2020. (AP PhotoGene J. Puskar)

Chicago Cubs' Ian Happ, center, leaves the game between manager David Ross, left, and a team trainer after fouling a pitch off his head during the fourth inning the team's baseball game against the Pittsburgh Pirates in Pittsburgh, Thursday, Sept. 3, 2020. (AP PhotoGene J. Puskar)

TRAINER'S ROOM

Cubs: CF 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. He was replaced by Cameron Maybin. Chicago said X-rays were negative.

Pirates: Rescheduled live batting practice for RHP Mitch Keller (strained left oblique) and RHP Jameson Taillon (Tommy John elbow surgery), who were both slated to throw on Thursday.

Chicago Cubs starting pitcher Alec Mills delivers during the first inning of the team's baseball game against the Pittsburgh Pirates in Pittsburgh, Thursday, Sept. 3, 2020. (AP PhotoGene J. Puskar)

Chicago Cubs starting pitcher Alec Mills delivers during the first inning of the team's baseball game against the Pittsburgh Pirates in Pittsburgh, Thursday, Sept. 3, 2020. (AP PhotoGene J. Puskar)

UP NEXT

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.

Pirates: Begin a four-game series against Cincinnati with a doubleheader on Friday. Steven Brault (0-1, 4.00) takes on Luis Castillo (0-5, 4.10) in Game 1.

Chicago Cubs' Ian Happ fouls a pitch from Pittsburgh Pirates starting pitcher JT Brubaker off his head during the fourth inning the team's baseball game in Pittsburgh, Thursday, Sept. 3, 2020. Happ was examined by a team trainer and left the game. (AP PhotoGene J. Puskar)

Chicago Cubs' Ian Happ fouls a pitch from Pittsburgh Pirates starting pitcher JT Brubaker off his head during the fourth inning the team's baseball game in Pittsburgh, Thursday, Sept. 3, 2020. Happ was examined by a team trainer and left the game. (AP PhotoGene J. Puskar)

More AP MLB: https://apnews.com/MLB and https://twitter.com/AP_Sports

Pittsburgh Pirates starting pitcher JT Brubaker delivers during the first inning of the team's baseball game against the Chicago Cubs in Pittsburgh, Thursday, Sept. 3, 2020. (AP PhotoGene J. Puskar)

Pittsburgh Pirates starting pitcher JT Brubaker delivers during the first inning of the team's baseball game against the Chicago Cubs in Pittsburgh, Thursday, Sept. 3, 2020. (AP PhotoGene J. Puskar)