WASHINGTON -- Ian Desmond led off the bottom of the seventh with a tie-breaking home run to right-center off reliever Manuel Corpas as the Washington Nationals beat the Colorado Rockies 2-1 on Friday.
It was the 12th homer of the season for Desmond, who homered for the third game in a row. He leads active National League shortstops in extra-base hits. (Colorado's Troy Tulowitzki is tied with Desmond, but Tulowitzki is currently on the disabled list.)
The winning pitcher was Stephen Strasburg (4-6), who was lifted for pinch-hitter Chad Tracy three batters after the Desmond homer. Strasburg (95 pitches) went seven innings and allowed five hits and one run with nine strikeouts and no walks.
Colorado (37-38) lost its fifth game in a row as Washington's Drew Storen pitched a scoreless eighth and closer Rafael Soriano shut the door in the ninth for his 19th save. Todd Helton singled with one out in the ninth for the Rockies, but Soriano retired the next two batters.
Washington (37-36) tied the game at 1-1 in the sixth on a two-out RBI double into the right-field corner by Ryan Zimmerman. His hit scored rookie Anthony Rendon, who had singled.
Josh Rutledge doubled with two outs in the seventh against Strasburg, and the Rockies then sent in Tyler Colvin to pinch-hit for starter Tyler Chatwood with the score 1-1.
Colvin was 3-for-3 with two homers in his career against Strasburg, but he was retired on a foul pop down the left line field line as Washington third baseman Zimmerman made a running, basket catch with his back to the infield to end the threat.
Chatwood allowed four hits and one run in six innings while Corpas fell to 0-2 after he allowed his first homer of the season.
The Rockies took a 1-0 lead in the third on a two-out RBI single to left by DJ LeMahieu that scored Josh Rutledge, who was hit by a pitch and went to second on a sacrifice bunt by Chatwood.
The RBI was just the sixth in 100 at-bats for LeMahieu, and it came against Strasburg, who entered the game with a 2.50 ERA.
Strasburg was making his first start at home since coming off the disabled list. In his first start since May 31, on Sunday in Cleveland, he allowed one run and one hit in five innings.
Chatwood, in his first career outing against Washington, has now pitched against 25 teams and in 20 different stadiums during his career. He allowed two hits and no runs in the first five innings.
Rockies center fielder Dexter Fowler was back in the lineup at the leadoff spot after he did not play Thursday. He fouled a ball of his right ring finger on June 13 and last played on Monday at Toronto.
"He is ready to go. Hand injuries are rough," Rockies manager Walt Weiss said.
Fowler was hitless in his three at-bats with two strikeouts.
NOTES: The Rockies called up OF Corey Dickerson, 24, from Triple-A Colorado Springs, where he was hitting .386 with 19 doubles, 13 triples, nine homers and 38 RBIs in 277 at bats. "They told me to do what I do and I will be fine," Dickerson said before the game. "He plays the game really hard," Weiss said. The Mississippi native had never been to the nation's capital and seven of his family members flew to Washington for his first major league game. ... Colorado's Michael Cuddyer singled in the second inning to extend his career-best hitting streak to 19 games. He has also reached base in 38 games in a row to tie a team record. ... Strasburg entered the game with an 0-2 career record and 3.75 ERA against the Rockies. "He is supremely talented with a bright future," Weiss said. ... Desmond has 32 extra-base hits (18 doubles, 2 triples, 12 homers). Tulowitzki has 32 as well but is on the DL with a fractured rib.