Extra bases

Extra bases

• For the second straight start, catcher Dioner Navarro was matched up with pitcher Matt Garza.

The two were teammates on the Rays, and Garza wasn't happy with Welington Castillo after a June 11 game against the Reds when he gave up a season-high nine runs over five innings. Sveum said timing was more the reason why Navarro was behind the plate Friday.

"It's just a matter of having a quick turnover, playing two games in 24 hours, you've got to get Navarro in there," Sveum said.

The Cubs played a night game in St. Louis on Thursday, and had a day game on Friday against the Astros. With Navarro in his last start on Sunday against the Mets, Garza threw seven shutout innings.

• The Cubs are mulling possible roster moves, Sveum said. The team was carrying eight relievers, having added a pitcher after outfielder David DeJesus went on the disabled list last Saturday because of a sprained right shoulder.

Carrie Muskat is a reporter for MLB.com. She writes a blog, Muskat Ramblings, and you can follow her on Twitter @CarrieMuskat. This story was not subject to the approval of Major League Baseball or its clubs.