Extra bases

• Matt Garza will make his third Minor League rehab outing on Saturday, when he takes the mound for Double-A Tennessee. Garza, who has been sidelined since mid-February with a strained left lat, started for the Smokies on May 1, throwing 2 2/3 innings. He is expected to make at least one more start after Saturday.

• Four of the Cubs' starting pitchers are making it tough on opposing batters.

Travis Wood (.179), Scott Feldman (.200), Carlos Villanueva (.209), and Jeff Samardzija (.210) rank third, seventh, 11th and 13th in the National League in opponents' batting average. The Cubs' starters lead the Major Leagues with a combined .216 opponents' batting average.

"It's good to have a low one," Feldman said Friday, "but sometimes that stuff is out of your control, and you give up hard-hit balls and they're right at guys. You can give up hits on broken bats. Usually at the end of the season, that stuff evens out. If you keep the ball out of the middle of the plate, it helps."

• The Cubs on Friday traded infielder Alberto Gonzalez to the Yankees for future considerations. Gonzalez made the Cubs' Opening Day roster, primarily to help in the infield while Darwin Barney was on the disabled list. In 11 games with the Cubs, he was 5-for-23 (.217).

• Cubs top prospect Javier Baez had two hits, including a double and a triple, and stole a base in Class A Daytona's 4-3 win over Dunedin on Thursday. Baez was batting .244 overall. Dustin Geiger had two hits and raised his team-leading RBIs total to 29.

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.