WASHINGTON -- In the midst of his best start of the season, Ramon Ortiz also flashed a little baserunning savvy.
Ortiz reached second on a misplayed sacrifice attempt in the sixth. With Ortiz on second and Marlon Anderson on third with two outs, reliever Jon Switzer threw a wild pitch, which slowly bounded away from catcher Dioner Navarro.
Navarro got the ball and flipped it behind his back to try to get Anderson, but the ball sailed over Switzer's head. Ortiz alertly hurried around third and beat Navarro back to the plate for the Nationals' final run.
"I like to play hard," Ortiz said. "It's the way I like to play. When you do play hard, the window opens."
Ortiz (6-6) also threw seven innings, allowing one run and four hits. He struck out four and didn't walk a batter to earn his first win since June 7.
"I think that was overall the smoothest outing - number of pitches thrown, number of innings pitched," manager Frank Robinson said. "Today it was smooth sailing out there. He was in complete control."
The Devil Rays committed three of their four errors in the sixth. Right fielder Russell Branyan dropped a Royce Clayton flyball in the gap after cutting in front of center fielder Damon Hollins, giving the Devil Rays four errors for the first time since April 19 against Boston.
"That was just a bad moment for us," manager Joe Madden said of the sixth.
Ryan Zimmerman hit a two-run drive in the first for his 11th homer for the Nationals. Jose Guillen, who entered the game with a .205 average, hit two of Washington's five doubles, and Anderson was 2-for-3.
Jae Seo (0-1) allowed four runs, three earned, and seven hits over five innings to lose his first start with the Devil Rays, who acquired him in a trade with the Los Angeles Dodgers last week. Seo's last start was June 2.
"I thought his velocity got better as his game went on," Maddon said. "We've just got to get him some steady work. And I thought he got sharper as the game got deeper so I thought that was a good sign."
The Devil Rays won 11 of 18 games in interleague play, but Sunday's finale with Washington was a sloppy ending. After Zimmerman's home run scored Royce Clayton, Daryle Ward reached when second baseman Jorge Cantu misplayed a grounder. Ward scored on Guillen's double for a 3-0 lead.
The Nationals added a run in the fourth when Brian Schneider walked and scored on Jose Vidro's double.
Anderson made his second straight start in center field. He jumped against the wall in right-center field to make a leaping catch of a flyball by Russell Branyan in the sixth inning. ... Ortiz hit three batters with pitches. He has a team-high 11 for the season. ... LF Carl Crawford went 2-for-4 for Tampa Bay and finished the series with eight hits in 13 at-bats. ... LF Alfonso Soriano did not play for the first time this season. In his last eight games, he is 2-for-33. ... Seo earned the loss in the Nationals' 10-4 win over the Dodgers on May 28. ... Guillen left the game in the seventh inning after his second double. He had stayed in after feeling some tightness in his right hamstring after his first-inning double. ... Navarro was acquired with Seo in last week's trade with Los Angeles, which sent LHP Mark Hendrickson and C Toby Hall to the Dodgers.