Top prospect Jorge Soler laughs as the Chicago Cubs get ready for the 2013 season during their spring training at Fitch park in Mesa, AZ on Monday, February 18, 2013. | Brian Powers~Sun-Times Media

Dale Sveum, right, talks to Theo Epstein as the Chicago Cubs get ready for the 2013 season during their spring training at Fitch park in Mesa, AZ on Monday, February 18, 2013. | Brian Powers~Sun-Times Media

Top prospect Javier Baez takes batting practice as the Chicago Cubs get ready for the 2013 season during their spring training at Fitch park in Mesa, AZ on Monday, February 18, 2013. | Brian Powers~Sun-Times Media

Jeff Samardzija throws during batting practice as the Chicago Cubs get ready for the 2013 season during their spring training at Fitch park in Mesa, AZ on Monday, February 18, 2013. | Brian Powers~Sun-Times Media

The Chicago Cubs get ready for the 2013 season during their spring training at Fitch park in Mesa, AZ on Monday, February 18, 2013. | Brian Powers~Sun-Times Media

Pitchers look on as teammates get their throws in as the Chicago Cubs get ready for the 2013 season during their spring training at Fitch park in Mesa, AZ on Monday, February 18, 2013. | Brian Powers~Sun-Times Media

The Chicago Cubs get ready for the 2013 season during their spring training at Fitch park in Mesa, AZ on Monday, February 18, 2013. | Brian Powers~Sun-Times Media

The Chicago Cubs get ready for the 2013 season during their spring training at Fitch park in Mesa, AZ on Monday, February 18, 2013. | Brian Powers~Sun-Times Media

Chris Volstad is a power pitcher with a 6-8 frame. “The kid’s a beast out there,” Cubs pitching coach Chris Bosio said. | Morry Gash~AP

Alfonso Soriano fields a ground ball as the Chicago Cubs get ready for the 2013 season during their spring training at Fitch park in Mesa, AZ on Monday, February 18, 2013. | Brian Powers~Sun-Times Media

Darwin Barney fields a ground ball as the Chicago Cubs get ready for the 2013 season during their spring training at Fitch park in Mesa, AZ on Monday, February 18, 2013. | Brian Powers~Sun-Times Media

Dale Sveum watches batting practice as the Chicago Cubs get ready for the 2013 season during their spring training at Fitch park in Mesa, AZ on Monday, February 18, 2013. | Brian Powers~Sun-Times Media

Rob Deer, left, and Dale Sveum talk as The Chicago Cubs get ready for the 2013 season during their spring training at Fitch park in Mesa, AZ on Monday, February 18, 2013. | Brian Powers~Sun-Times Media

Top prospect Jorge Soler, left, and Javier Baez walk to the next field as the Chicago Cubs get ready for the 2013 season during their spring training at Fitch park in Mesa, AZ on Monday, February 18, 2013. | Brian Powers~Sun-Times Media

Jeff Samardzija laughs off a line drive back to the mound that caught him in the leg off the batt of Javier Baez while he was throwing batting practice as the Chicago Cubs get ready for the 2013 season during their spring training at Fitch park in Mesa, AZ on Monday, February 18, 2013. | Brian Powers~Sun-Times Media

Chicago Cubs players make their way to a spring training baseball workout Thursday, Feb. 14, 2013, in Mesa, Ariz. (AP Photo/Morry Gash)

Chicago Cubs' Jeff Samardzija bunts during a spring training baseball workout, Thursday, Feb. 14, 2013, in Mesa, Ariz. (AP Photo/Morry Gash)

Chicago Cubs players make their way to a practice field during a spring training baseball workout, Thursday, Feb. 14, 2013, in Mesa, Ariz. (AP Photo/Morry Gash)

Chicago Cubs pitcher Kyuji Fugikawa arrives at the Cubs spring training facility for a physical Monday, Feb. 11, 2013 in Mesa, Ariz. The Cubs pitchers and catchers first workout is Tuesday. (AP Photo/Matt York)

Chicago Cubs grounds keeper Domonique Thompson applies dirt to the base paths at the Cubs' spring training facility Monday, Feb. 11, 2013 in Mesa, Ariz. The Cubs pitchers and catchers first workout is Tuesday. (AP Photo/Matt York)

Chicago Cubs' Anthony Rizzo leaves the workout room Monday, Feb. 11, 2013 at the Cubs' spring training facility in Mesa, Ariz. The Cubs pitchers and catchers first workout is Tuesday. (AP Photo/Matt York)