Extra bases

• Triple-A Iowa third baseman Josh Vitters was placed on the disabled list for the second time this season. Vitters, who missed time April 9-30 because of a lower back strain, was placed on the DL Tuesday with a strained muscle in his rib cage. In 19 games with Iowa, Vitters was batting .270 with two doubles, three homers and eight RBIs.

"It's been a frustrating injury for him," Cubs general manager Jed Hoyer said. "Hopefully he'll get through this as well."

• Cubs top prospect Javier Baez hit a walk-off home run in the 11th inning, a two-run shot, to help Class A Daytona beat Tampa, 6-4, on Tuesday. Baez is batting .268 for the season.

• On June 11, the Cubs will host "Meet the Team, Have a Ball" at Wrigley Field. The event gives fans the chance to walk on the outfield grass and collect autographs from players and coaches. Admission includes an MLB baseball, ball cube and snack. Admission is $300 per person.

On June 16, fans can participate in "Catch In the Confines" and spend 50 minutes throwing the ball in the outfield, run the bases, visit the batting cages or chat in the dugouts. The event starts at 12 p.m. CT, and additional time slots are available. Admission is $150 per participant, with $15 guest tickets.

Proceeds for both events benefit Chicago Cubs Charities. Tickets are available on Cubs.com/community.

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.