Extra bases

• Third baseman Ian Stewart went 1-for-3 with two RBIs on Monday in the sixth game of his rehab assignment with Triple-A Iowa. Cubs assistant general manager Randy Bush was watching Stewart's game to see how he's progressing from a sore left quad, which he sustained in February.

"When he's ready to help us, we'll bring him up," Hoyer said.

• Infielder Alberto Gonzalez, who was designated for assignment on April 19, has cleared waivers and was sent outright to Triple-A Iowa. Gonzalez made the Opening Day roster and subbed at second base while Darwin Barney was on the disabled list.

• Cubs' Summer Camps will return beginning the week of June 24. There will be six one-week sessions to run through Aug. 5 in Lake Forest, Riverside, Palatine, Niles, Naperville and Evanston. The camps are available to boys and girls between the ages of 5-13.

Each camper will receive a full Cubs uniform, and get on-field skill development and professional instruction. Campers also get the opportunity to take a guided tour of Wrigley Field and either meet with a member of the current team or take a photo inside the clubhouse, depending on the schedule.

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.