Extra bases

• The Cubs just completed a stretch in which they played 20 of 26 games on the road. Friday's opener with the Pirates began a 10-game homestand.

"I thought the guys did really well. We ground it out," Renteria said of the stretch of games. "They keep playing the game, and I don't think they were thinking that it was a 20-game stretch, I think they were just more focused on playing the game every single day."

• Chicago is 10-7 in June entering Friday's game. The 10 wins in the month are tied for second among National League clubs.

• The bullpen's 3.08 season ERA is the fourth lowest in the NL, and is more than a full run lower than its 4.15 ERA through 70 games last year.