CHICAGO _ The Cubs concluded their six-game homestand Wednesday with a convincing blend of power and pitching to pull away to a 10-1 victory over the Athletics before 41,179 at Wrigley Field.
Ian Happ, making his first start this season at second base, hit a grand slam to highlight a five-run fourth inning off Homer Bailey, and Kyle Schwarber poked a three-run opposite-field shot to left off reliever Lou Trivino as part of a four-run fifth.
Victor Caratini capped the scoring with a solo homer in the eighth.
Jose Quintana gave a well-worked bullpen a break with seven innings of two-hit ball and extended his winning streak to six, tying Kyle Hendricks for the longest by a Cubs pitcher this season.
The Cubs (62-52) won for the 13th time in 16 home games since June 27, and they're 24-10 at home since May 25.
Wednesday's win assures the Cubs (41-19) of their sixth consecutive winning season at Wrigley, their longest home streak since 1967-73.
The Cubs have won Quintana's last six starts after losing six consecutive starts from May 26 to June 22.
Javier Baez sparked the five-run fourth with an opposite-field single to right to score Kris Bryant, and he hit another single that preceded Schwarber's homer.
Baez, however, fouled a pitch off his lower left leg in the seventh and was on the ground in pain for a few minutes. He finished the at-bat by grounding into a double play and walked slowly off the field before David Bote replaced him.
Happ, meanwhile, continues to give the Cubs a spark. He's 6-for-10 with two home runs during his four-game hitting streak.
The Cubs open a four-game series Thursday night in Cincinnati that starts a 10-game, three-city trip. The Cubs are 21-33 on the road and haven't won their last 10 road series.