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NEW YORK - JUNE 18: Adam Dunn #44 of the Washington Nationals slides into second base with a double and drives in a run against the New York Yankees during their game on June 18, 2009 at Yankee Stadium in the Bronx Borough of New York City.

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WASHINGTON - JUNE 04: Randy Johnson #51 of the San Francisco Giants pitches to Adam Dunn #44 of the Washington Nationals at Nationals Park on June 4, 2009 in Washington, DC. Johnson is vying for his 300th career victory.

AP Photo 6 months ago

Washington Nationals' Ryan Zimmerman (11) greets Adam Dunn, center, at the plate after he scored on Dunn's fourth-inning home run in a baseball game at Citi Field in New York, Wednesday, May 27, 2009. Mets catcher Ramon Castro is at right.

AP Photo 6 months ago

Washington Nationals' Adam Dunn, left, talks with Nick Johnson after striking out with two men in scoring position to end the seventh inning against the Pittsburgh Pirates in a baseball game Monday, May 18, 2009, in Washington.

AP Photo 6 months ago

Washington Nationals' Adam Dunn, right, questions a call after striking out against the Philadelphia Phillies during the fifth inning of the second game of their baseball doubleheader on Jackie Robinson Night on Saturday, May 16, 2009, in Washington.

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PHOENIX - MAY 08: Adam Dunn #44 of the Washington Nationals waits to bat on deck during the game against the Arizona Diamondbacks at Chase Field on May 8, 2009 in Phoenix, Arizona.

Washington Nationals' Adam Dunn (L) is congratulated by third base coach Pat Listach (R) after hitting a 3-run home run against the St. Louis Cardinals in the fifth inning of their National League baseball game in Washington, May 2, 2009.

Washington Nationals' Adam Dunn (C) rounds the bases after hitting a 3-run home run against St. Louis Cardinals pitcher Joel Pineiro (L) during the fifth inning of their National League baseball game in Washington, May 2, 2009.

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WASHINGTON - APRIL 16: Adam Dunn #44 of the Washington Nationals reacts to a called third strike during the game against the Philadelphia Phillies at Nationals Park on April 16, 2009 in Washington, DC.

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WASHINGTON - APRIL 13: Adam Dunn #44 of the Washington Nationals is introduced before the home opener against the Philadelphia Phillies at Nationals Park on April 13, 2009 in Washington, DC.

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ATLANTA - APRIL 12: Outfielder Adam Dunn #44 of the Washington Nationals cools down after batting practice against the Atlanta Braves April 12, 2009 at Turner Field in Atlanta, Georgia.

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ATLANTA - APRIL 12: Outfielder Adam Dunn #44 of the Washington Nationals strikes out against the Atlanta Braves April 12, 2009 at Turner Field in Atlanta, Georgia.

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ATLANTA - APRIL 12: Outfielder Adam Dunn #44 of the Washington Nationals seeks pours water on his head during the game against the Atlanta Braves April 12, 2009 at Turner Field in Atlanta, Georgia.

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ATLANTA - APRIL 12: Outfielder Adam Dunn #44 of the Washington Nationals strikes out against the Atlanta Braves April 12, 2009 at Turner Field in Atlanta, Georgia.

AP Photo 8 months ago

United States' Adam Dunn, left, and Ryan Braun sit on the bench during a 5-3 loss to Venezuela in the World Baseball Classic group C final in Toronto on Wednesday, March 11, 2009.

Team USA runner Adam Dunn (L) is out at second as Team Canada second baseman Peter Orr throws to first base during the second inning of their World Baseball Classic (WBC) game in Toronto, March 7, 2009.

Team USA batter Adam Dunn (R) celebrates his two-run home against Team Canada with teammate Brian McCann during the eighth inning of their World Baseball Classic (WBC) game in Toronto, March 7, 2009.

Team USA batter Adam Dunn (R) celebrates his two-run home run in front of Team Canada catcher Russell Martin during the eighth inning of their World Baseball Classic (WBC) game in Toronto, March 7, 2009.

AP Photo 9 months ago

United States' Adam Dunn, left and Chipper Jones, right, flank manger Davey Johnson before their exhibition spring baseball game against the Philadelphia Phillies in Clearwater, Fla. , Thursday, March 5, 2009.

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DUNEDIN, FL - MARCH 5: Infielder Chipper Jones #10 of Team USA celebrates a home run with teammate Adam Dunn #17 against the Philadelphia Phillies March 5, 2009 at Bright House Field in Dunedin, Florida.

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VIERA, FL - FEBRUARY 21: Adam Dunn #44 of the Washington Nationals poses during photo day at Roger Dean Stadium on February 21, 2009 in Viera, Florida.

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VIERA, FL - FEBRUARY 21: Adam Dunn #44 of the Washington Nationals poses during photo day at Roger Dean Stadium on February 21, 2009 in Viera, Florida.

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VIERA, FL - FEBRUARY 21: Adam Dunn #44 of the Washington Nationals poses during photo day at Roger Dean Stadium on February 21, 2009 in Viera, Florida.

Getty Images 9 months ago

VIERA, FL - FEBRUARY 21: Adam Dunn #44 of the Washington Nationals poses during photo day at Roger Dean Stadium on February 21, 2009 in Viera, Florida.

AP Photo 5 months ago

Washington Nationals' Adam Dunn (44) is greeted at home by Josh Willingham (16) after Dunn hit a solo home run also his career 300th homerun as Atlanta Braves catcher David Ross (8) looks on during the seventh inning of a baseball game, Saturday, July 4, 2009, in Washington.