Moisture flies off the the hand of Washington Nationals starting pitcher Stephen Strasburg during the third inning of a baseball game in the rain against the St. Louis Cardinals at Nationals Park, Sunday, Sept. 2, 2012, in Washington. (AP Photo/Alex Brandon)

Washington Nationals starting pitcher Stephen Strasburg delivers during the second inning of a baseball game with the St. Louis Cardinals at Nationals Park, Sunday, Sept. 2, 2012, in Washington. (AP Photo/Alex Brandon)

Washington Nationals starting pitcher Stephen Strasburg delievrs during the first inning of a baseball game with the St. Louis Cardinals at Nationals Park, Sunday, Sept. 2, 2012, in Washington. (AP Photo/Alex Brandon)

St. Louis Cardinals starting pitcher Jake Westbrook throws during the second inning of a baseball game with the Washington Nationals at Nationals Park, Sunday, Sept. 2, 2012, in Washington. (AP Photo/Alex Brandon)

Washington Nationals starting pitcher Stephen Strasburg throws during the second inning of a baseball game with the St. Louis Cardinals at Nationals Park, Sunday, Sept. 2, 2012, in Washington. (AP Photo/Alex Brandon)

St. Louis Cardinals starting pitcher Jake Westbrook throws during the first inning of a baseball game with the Washington Nationals at Nationals Park, Sunday, Sept. 2, 2012, in Washington. (AP Photo/Alex Brandon)

Washington Nationals' Danny Espinosa hits an RBI single to score Chad Tracy for the winning run during the seventh inning of a baseball game with the St. Louis Cardinals at Nationals Park, Sunday, Sept. 2, 2012, in Washington. The Nationals won 4-3. (AP Photo/Alex Brandon)

St. Louis Cardinals' Jon Jay reacts after being hit by a pitch during the seventh inning of a baseball game with the Washington Nationals at Nationals Park, Sunday, Sept. 2, 2012, in Washington. The Nationals won 4-3. (AP Photo/Alex Brandon)

Washington Nationals' Kurt Suzuki (24) crosses the plate for a solo home run during the fourth inning of a baseball game with the St. Louis Cardinals at Nationals Park, Sunday, Sept. 2, 2012, in Washington. The Nationals won 4-3. (AP Photo/Alex Brandon)

Washington Nationals catcher Kurt Suzuki waves to the fans after a baseball game with the St. Louis Cardinals at Nationals Park, Sunday, Sept. 2, 2012, in Washington. The Nationals won 4-3. (AP Photo/Alex Brandon)

Washington Nationals' Ian Desmond hits an RBI-single during the seventh inning of a baseball game with the St. Louis Cardinals at Nationals Park, Sunday, Sept. 2, 2012, in Washington. The Nationals won 4-3. (AP Photo/Alex Brandon)

Washington Nationals' Kurt Suzuki (24) celebrates with Chad Tracy after Tracy scored the winning run during the seventh inning of a baseball game with the St. Louis Cardinals at Nationals Park, Sunday, Sept. 2, 2012, in Washington. The Nationals won 4-3. (AP Photo/Alex Brandon)

Washington Nationals' Adam LaRoche celebrates with Ian Desmond after Desmond scored during the sixth inning of a baseball game against the St. Louis Cardinals at Nationals Park, Sunday, Sept. 2, 2012, in Washington. The Nationals won 4-3. (AP Photo/Alex Brandon)

Washington Nationals' Kurt Suzuki hits an RBI single during the sixth inning of a baseball game with the St. Louis Cardinals at Nationals Park, Sunday, Sept. 2, 2012, in Washington. The Nationals won 4-3. (AP Photo/Alex Brandon)

Washington Nationals starter Stephen Strasburg, left, talks with catcher Kurt Suzuki after pitching the sixth inning of a baseball game against the St. Louis Cardinals at Nationals Park, Sunday, Sept. 2, 2012, in Washington. Strasburg was relieved after completing the sixth inning and the Nationals won 4-3. (AP Photo/Alex Brandon)

Washington Nationals starting pitcher Stephen Strasburg wipes his face in the dugout after pitching the sixth inning of a baseball game against the St. Louis Cardinals at Nationals Park, Sunday, Sept. 2, 2012, in Washington. Strasburg was relieved after completing the sixth inning and the Nationals won 4-3. (AP Photo/Alex Brandon)

Washington Nationals' Kurt Suzuki hits an RBI single during the sixth inning of a baseball game with the St. Louis Cardinals at Nationals Park, Sunday, Sept. 2, 2012, in Washington. The Nationals won 4-3. (AP Photo/Alex Brandon)

Washington Nationals relief pitcher Tyler Clippard. left, celebrates with first baseman Chad Tracy after a baseball game against the St. Louis Cardinals at Nationals Park, Sunday, Sept. 2, 2012, in Washington. The Nationals won 4-3. (AP Photo/Alex Brandon)

St. Louis Cardinals right fielder Carlos Beltran cannot catch a foul ball hit by Washington Nationals' Ian Desmond during the seventh inning of a baseball game at Nationals Park, Sunday, Sept. 2, 2012, in Washington. Desmond hit an RBI-single and the Nationals won 4-3. (AP Photo/Alex Brandon)

Washington Nationals relief pitcher Sean Burnett wipes his face in the dugout during a baseball game with the St. Louis Cardinals at Nationals Park, Sunday, Sept. 2, 2012, in Washington. The Nationals won 4-3. (AP Photo/Alex Brandon)

Washington Nationals relief pitcher Ryan Mattheus yells into his glove as he comes off the field after giving up an RBI double during the eighth inning of a baseball game with the St. Louis Cardinals at Nationals Park, Sunday, Sept. 2, 2012, in Washington. The Nationals won 4-3. (AP Photo/Alex Brandon)

St. Louis Cardinals' Carlos Beltran talks with home plate umpire Mike Winters after striking out during the sixth inning of a baseball game with the Washington Nationals at Nationals Park, Sunday, Sept. 2, 2012, in Washington. The Nationals won 4-3. (AP Photo/Alex Brandon)

Washington Nationals general manager Mike Rizzo, center, talks with the umpires about a light rain before a baseball game against the St. Louis Cardinals at Nationals Park, Sunday, Sept. 2, 2012, in Washington. (AP Photo/Alex Brandon)