Nats Spring Training

Fans Fans watch during a Washington Nationals spring training baseball workout Thursday, Feb. 14, 2013, in Viera, Fla. (AP Photo/David J. Phillip)

AP Photo/David J. Phillip

Enrique Cortes Enrique Cortes, 4, reaches to catch a ball while attending the Washington Nationals spring training baseball workout on Sunday, Feb. 17, 2013, in Viera, Fla. (AP Photo/David J. Phillip)

AP Photo/David J. Phillip

Jayson Werth Washington Nationals outfielder Jayson Werth waits to hit during a spring training baseball workout on Sunday, Feb. 17, 2013, in Viera, Fla. (AP Photo/David J. Phillip)

AP Photo/David J. Phillip

Adam LaRoche, Drake LaRoche Washington Nationals first baseman Adam LaRoche, right, races his son Drake, left, during a spring training baseball workout on Sunday, Feb. 17, 2013, in Viera, Fla. (AP Photo/David J. Phillip)

AP Photo/David J. Phillip

Adam LaRoche Washington Nationals first baseman Adam LaRoche tosses his bat during a spring training baseball workout, Sunday, Feb. 17, 2013, in Viera, Fla. (AP Photo/David J. Phillip)

AP Photo/David J. Phillip

Susie Chefer Susie Chefer, of Jacksonville, Fla., points to another practice field as she holds the leash of her dog Roise while attending a Washington Nationals spring training baseball workout on Sunday, Feb. 17, 2013, in Viera, Fla. (AP Photo/David J. Phillip)

AP Photo/David J. Phillip

Yunesky Maya, Fernando Abad Washington Nationals pitchers Yunesky Maya, left, and Fernando Abad, right, leave the practice fields as rain falls after a spring training baseball workout Thursday, Feb. 14, 2013, in Viera, Fla. (AP Photo/David J. Phillip)

AP Photo/David J. Phillip

Stephen Strasburg Washington Nationals pitcher Stephen Strasburg throws during a spring training baseball workout Thursday, Feb. 14, 2013, in Viera, Fla. (AP Photo/David J. Phillip)

AP Photo/David J. Phillip

Tanner Roark Washington Nationals pitcher Tanner Roark tosses the ball to home plate with his glove as part of a drill during a spring training baseball workout Thursday, Feb. 14, 2013, in Viera, Fla. (AP Photo/David J. Phillip)

AP Photo/David J. Phillip

Gio Gonzalez Washington Nationals pitcher Gio Gonzalez throws during a spring training baseball workout Thursday, Feb. 14, 2013, in Viera, Fla. (AP Photo/David J. Phillip)

AP Photo/David J. Phillip

Stephen Strasburg Washington Nationals pitcher Stephen Strasburg throws during a spring training baseball workout Thursday, Feb. 14, 2013, in Viera, Fla. (AP Photo/David J. Phillip)

AP Photo/David J. Phillip

Ryan Perry Washington Nationals pitcher Ryan Perry bunts a pitch during a spring training baseball workout Thursday, Feb. 14, 2013, in Viera, Fla. (AP Photo/David J. Phillip)

AP Photo/David J. Phillip

Stephen Strasburg Washington Nationals pitcher Stephen Strasburg throws during a spring training baseball workout Thursday, Feb. 14, 2013, in Viera, Fla. (AP Photo/David J. Phillip)

AP Photo/David J. Phillip

Bryce Harper Washington Nationals outfielder Bryce Harper throws during a spring training baseball workout on Sunday, Feb. 17, 2013, in Viera, Fla. (AP Photo/David J. Phillip)

AP Photo/David J. Phillip

Stephen Strasburg Washington Nationals pitcher Stephen Strasburg, center, smiles as he stretches with teammates during a spring training baseball workout Thursday, Feb. 14, 2013, in Viera, Fla. (AP Photo/David J. Phillip)

AP Photo/David J. Phillip

Christian Garcia, Davey Johnson Washington Nationals manager Davey Johnson, left, talks with pitcher Christian Garcia during a spring training baseball workout Thursday, Feb. 14, 2013, in Viera, Fla. (AP Photo/David J. Phillip)

AP Photo/David J. Phillip

Stephen Strasburg Washington Nationals pitcher Stephen Strasburg smiles as he adjusts his cap during a spring training baseball workout Thursday, Feb. 14, 2013, in Viera, Fla. (AP Photo/David J. Phillip)

AP Photo/David J. Phillip

Stephen Strasburg Washington Nationals pitcher Stephen Strasburg tosses a ball during a spring training baseball workout Thursday, Feb. 14, 2013, in Viera, Fla. (AP Photo/David J. Phillip)

AP Photo/David J. Phillip

Davey Johnson, Christian Garcia Washington Nationals manager Davey Johnson, left, laughs as he talks with pitcher Christian Garcia during a spring training baseball workout Thursday, Feb. 14, 2013, in Viera, Fla. (AP Photo/David J. Phillip)

AP Photo/David J. Phillip

Stephen Strasburg Washington Nationals pitcher Stephen Strasburg laces up his shoes before the start of a spring training baseball workout Thursday, Feb. 14, 2013, in Viera, Fla. (AP Photo/David J. Phillip)

AP Photo/David J. Phillip

Nena Stevens, Gio Gonzalez Washington Nationals pitcher Gio Gonzalez, right, signs an autograph for Nena Stevens, of Winter Park, Fla., as rain falls during a spring training baseball workout Thursday, Feb. 14, 2013, in Viera, Fla. (AP Photo/David J. Phillip)

AP Photo/David J. Phillip

Washington Nationals players Washington Nationals players keep dry in a dugout as ran falls during a spring training baseball workout Thursday, Feb. 14, 2013, in Viera, Fla. (AP Photo/David J. Phillip)

AP Photo/David J. Phillip

Gio Gonzalez Washington Nationals pitcher Gio Gonzalez rides on the back of a cart during a spring training baseball workout Thursday, Feb. 14, 2013, in Viera, Fla. (AP Photo/David J. Phillip)

AP Photo/David J. Phillip

Washington Nationals Washington Nationals players make their way to the practice fields for a spring training baseball workout Thursday, Feb. 14, 2013, in Viera, Fla. (AP Photo/David J. Phillip)

AP Photo/David J. Phillip

Michael Schnee Grounds crew member Michael Schnee works around home plate at Space Coast Stadium, the Washington Nationals spring training facility, Monday, Feb. 11, 2013 in Viera, Fla. Nationals pitchers and catchers first spring training workout is Thursday. (AP Photo/David J. Phillip)

AP Photo/David J. Phillip

Michael Schnee Grounds crew member Michael Schnee works around home plate at Space Coast Stadium, the Washington Nationals spring training facility, Monday, Feb. 11, 2013 in Viera, Fla. Nationals pitchers and catchers first spring training workout is Thursday. (AP Photo/David J. Phillip)

AP Photo/David J. Phillip

Stephen Strasburg Washington Nationals pitcher Stephen Strasburg warms up in the bullpen during spring training baseball in Viera, Fla., Wednesday, Feb. 20, 2013.(AP Photo/Phelan M. Ebenhack)

AP Photo/Phelan M. Ebenhack

Nationals Marlins Spring Baseball Fans try to get autographs from members of the Washington Nationals before the start of an exhibition spring training baseball game between the Miami Marlins and the Washington Nationals Wednesday, March 20, 2013, in Jupiter, Fla. The Nationals won 7-5. (AP Photo/Jeff Roberson)

AP Photo/Jeff Roberson

Corey Brown Washington Nationals outfielder Corey Brown dives but is unable to catch a ball hit by New York Mets non-roster invitee catcher Landon Powell during the sixth inning of an exhibition spring training baseball game in Port St. Lucie, Fla., Saturday, Feb. 23, 2013. (AP Photo/Julio Cortez)

AP Photo/Julio Cortez

Carlos Maldonado Washington Nationals catcher Carlos Maldonado watches from the dugout during a spring training baseball workout in Viera, Fla., Wednesday, Feb. 20, 2013.(AP Photo/Phelan M. Ebenhack)

AP Photo/Phelan M. Ebenhack

Bryce Harper, Ryan Zimmerman Washington Nationals' Bryce Harper (34) and Ryan Zimmerman (11) run the bases during spring training baseball in Viera, Fla., Wednesday, Feb. 20, 2013.(AP Photo/Phelan M. Ebenhack)

AP Photo/Phelan M. Ebenhack

Bryce Harper Washington Nationals outfielder Bryce Harper waits to take batting practice during a spring training baseball workout in Viera, Fla., Wednesday, Feb. 20, 2013.(AP Photo/Phelan M. Ebenhack)

AP Photo/Phelan M. Ebenhack

Adam LaRoche, Drake LaRoche Washington Nationals first baseman Adam LaRoche, left, talks with his son Drake, 11, while waiting to take batting practice during spring training baseball in Viera, Fla., Wednesday, Feb. 20, 2013.(AP Photo/Phelan M. Ebenhack)

AP Photo/Phelan M. Ebenhack

Jayson Werth Washington Nationals outfielder Jayson Werth has a laugh while warming up during spring training baseball in Viera, Fla., Wednesday, Feb. 20, 2013.(AP Photo/Phelan M. Ebenhack)

AP Photo/Phelan M. Ebenhack

Stephen Strasburg Washington Nationals pitcher Stephen Strasburg (37) laughs after throwing off the mound during batting practice at spring training baseball in Viera, Fla., Wednesday, Feb. 20, 2013.(AP Photo/Phelan M. Ebenhack)

AP Photo/Phelan M. Ebenhack

Davey Johnson, Rick Eckstein Washington Nationals manager Davey Johnson, right, and batting coach Rick Eckstein watch players warm up during spring training baseball in Viera, Fla., Wednesday, Feb. 20, 2013.(AP Photo/Phelan M. Ebenhack)

AP Photo/Phelan M. Ebenhack

Stephen Strasburg, Greg Booker Washington Nationals pitcher Stephen Strasburg (37) throws from the mound as coach Greg Booker watches during batting practice at spring training baseball in Viera, Fla., Wednesday, Feb. 20, 2013.(AP Photo/Phelan M. Ebenhack)

AP Photo/Phelan M. Ebenhack

Davey Johnson, Rick Eckstein Washington Nationals manager Davey Johnson, left, and batting coach Rick Eckstein chat during spring training baseball in Viera, Fla., Wednesday, Feb. 20, 2013.(AP Photo/Phelan M. Ebenhack)

AP Photo/Phelan M. Ebenhack

Bryce Harper Washington Nationals outfielder Bryce Harper runs past fans while changing to a different field during spring training baseball in Viera, Fla., Wednesday, Feb. 20, 2013.(AP Photo/Phelan M. Ebenhack)

AP Photo/Phelan M. Ebenhack

Adam LaRoche Washington Nationals first baseman Adam LaRoche tosses his bat during a spring training baseball workout, Sunday, Feb. 17, 2013, in Viera, Fla. (AP Photo/David J. Phillip)

AP Photo/David J. Phillip

Jayson Werth Washington Nationals outfielder Jayson Werth watches while waiting to take batting practice during spring training baseball in Viera, Fla., Wednesday, Feb. 20, 2013.(AP Photo/Phelan M. Ebenhack)

AP Photo/Phelan M. Ebenhack

Jordan Zimmermann FILE - This Oct. 8, 2012 file photo shows Washington Nationals starting pitcher Jordan Zimmermann throwing during the second inning in Game 2 of baseball's National League division series against the St. Louis Cardinals, Monday in St. Louis. Zimmermann was an arbitration-eligible Nationals player who agreed on a contract Friday. (AP Photo/Jeff Roberson, File)

AP Photo/Jeff Roberson, File

Michael Schnee Grounds crew member Michael Schnee works around home plate at Space Coast Stadium, the Washington Nationals spring training facility, Monday, Feb. 11, 2013 in Viera, Fla. Nationals pitchers and catchers first spring training workout is Thursday. (AP Photo/David J. Phillip)

AP Photo/David J. Phillip

Michael Schnee Grounds crew member Michael Schnee works around home plate at Space Coast Stadium, the Washington Nationals spring training facility, Monday, Feb. 11, 2013 in Viera, Fla. Nationals pitchers and catchers first spring training workout is Thursday. (AP Photo/David J. Phillip)

AP Photo/David J. Phillip

Tyler Clippard FILE - This Sept. 24, 2012 file photo shows Washington Nationals relief pitcher Tyler Clippard throwing during the eighth inning of a baseball game against the Milwaukee Brewers at Nationals Park in Washington. Clippard was an arbitration-eligible Nationals player who agreed on a contract Friday. (AP Photo/Alex Brandon, File)

AP Photo/Alex Brandon, File

Denard Span Washington Nationals outfielder Denard Span fields a ball during a spring training baseball workout, Sunday, Feb. 17, 2013, in Viera, Fla. (AP Photo/David J. Phillip)

AP Photo/David J. Phillip

Ryan Zimmerman Washington Nationals third baseman Ryan Zimmerman stretches with teammates during a spring training baseball workout on Sunday, Feb. 17, 2013, in Viera, Fla. (AP Photo/David J. Phillip)

AP Photo/David J. Phillip

Kurt Suzuki Washington Nationals cactcher Kurt Suzuki smiles during a spring training baseball workout on Sunday, Feb. 17, 2013, in Viera, Fla. (AP Photo/David J. Phillip)

AP Photo/David J. Phillip

Nationals Spring Baseball Washington Nationals pitcher Cole Kimball attends a spring training baseball workout, Sunday, Feb. 17, 2013, in Viera, Fla. (AP Photo/David J. Phillip)

AP Photo/David J. Phillip

Bryce Harper Washington Nationals outfielder Bryce Harper hits during a spring training baseball workout, Sunday, Feb. 17, 2013, in Viera, Fla. (AP Photo/David J. Phillip)

AP Photo/David J. Phillip

Washington Nationals Washington Nationals players run during a spring training baseball workout Sunday, Feb. 17, 2013, in Viera, Fla. (AP Photo/David J. Phillip)

AP Photo/David J. Phillip

Bryce Harper Washington Nationals' Bryce Harper waits for a pitch during a spring training baseball workout Sunday, Feb. 17, 2013, in Viera, Fla. (AP Photo/David J. Phillip)

AP Photo/David J. Phillip