LOS ANGELES -- Yasiel Puig was in just his second game back from a hamstring strain on Wednesday, but he decided to test the leg anyway. A wild dive at home plate saved his hamstring and won the game.

With the Dodgers trailing 3-2 and a runner on first in the bottom of the ninth, Puig singled and made it all the way around the bases thanks to an outfield error, giving Los Angeles a 4-3 walk-off win against the Washington Nationals on Wednesday at Dodger Stadium.

"Nobody thought the ball would go through," Puig said through an interpreter. "So when I did see the ball go through, I had to talk to my hamstring to see how far I could take it."

Thanks to the bizarre finish, the Dodgers completed a three-game series sweep.

"To see one like that and see Yasiel circle the bases, that's really exciting," Dodgers catcher A.J. Ellis said. "It was a really exciting moment to see the crowd come alive as he circled and see them fumble the relay exchange and know we were going to win, that's a really great feeling."

After Joc Pederson struck out to open the ninth, pinch hitter Howie Kendrick singled off Shawn Kelley (1-1). Puig then hit a grounder into center field, and the ball rolled underneath Michael Taylor's glove. Kendrick scored easily, and Puig blew past the stop sign at third base and dived into home plate to complete the round trip without a throw.

"It was a tough day for Michael," Nationals manager Dusty Baker said. "Maybe one of the toughest days that he'll remember for the rest of his career."

Taylor struggled in all facets, striking out in all five of his plate appearances before he came charging hard into left-center to try to field Puig's ball.

"It's a ground ball, I've got to make that play," Taylor said. "Just a tough day; 0-for-5 I can handle, but when I do something like that to cost the team the game, that's pretty tough."

Chris Hatcher (5-3) earned the win after retiring the only batter he faced to close the top of the ninth.

Wilson Ramos broke a 2-2 tie with a home run to left field off Pedro Baez in the eighth inning to give the Nationals a 3-2 lead.

Baez came into the game with two outs and none on in relief of Adam Liberatore. Ramos teed off on the third pitch of the at-bat -- a changeup -- and drove it 421 feet into the left field bleachers, just shy of the Los Angeles bullpen.

Washington starter Joe Ross went 6 1/3 innings before being relieved with runners at second and third. Oliver Perez replaced him and got out of the jam to keep the game tied 2-2. Ross gave up two runs on seven hits, walked one and struck out five.

In his sixth big league outing, Dodgers starter Julio Urias threw a career-high 94 pitches over five innings, four pitches above the soft limit that the team mandated. Urias gave up two runs on six hits, walked one and struck out six.

"I struggled a little bit, as opposed to other starts, but the good thing is that the team was able to win in the end," Urias said, through an interpreter. "The curve and the fastball just wasn't there. It wasn't until the last inning when I felt a little more comfortable with it."

Like Ross, Urias left with the game tied 2-2 and did not factor into the decision. The 19-year-old will make one more start before the Dodgers decide how to proceed with him throughout the rest of the season.

"Now that the manager has said that, I feel confident," Urias said. "Now I have to work so the next outing is better."

Chase Utley scored his 1,000th career run in the first inning, coming home from third on a wild pitch. Utley became just the third active player with 1,000 career runs and the first to reach the milestone in a Dodgers uniform since Devon White on May 5, 1999.

Los Angeles tied the game at 2-2 when Corey Seager hit a solo home run in the third inning. It was the rookie's 16th homer of the season, leaving him two behind Colorado's Trevor Story for the rookie lead.

Danny Espinosa put the Nationals on the board in the second inning, doubling off the top of the out-of-town scoreboard to score Ryan Zimmerman. Ruled an RBI ground-rule double, it was reviewed to see if the ball was hit high enough to be considered a home run, but the call on the field was confirmed. Ross then doubled to drive home Espinosa, giving Washington a 2-0 lead. It was Ross' first career RBI.

NOTES: Los Angeles RHP Brandon McCarthy (Tommy John surgery) made a rehab start with Triple-A Oklahoma City on Wednesday, giving up a run on three hits and striking out four in 3 2/3 innings. ... Dodgers manager Dave Roberts hasn't made a decision about a spot-starter for Friday's game in Pittsburgh. If they don't use one, RHP Kenta Maeda will pitch on regular rest. ... Los Angeles OF Trayce Thompson returned to the lineup and went 0-for-4. Thompson had started every game since May 30 until Yasiel Puig was reactivated from the 15-day disabled list. ... Los Angeles claimed RHP Layne Somsen from the New York Yankees and optioned him to Triple-A Oklahoma City. To make room, RHP Chin-hui Tsao (right triceps strain) was transferred to the 60-day disabled list. ... The Dodgers gave out Dusty Baker bobbleheads Wednesday to honor the former L.A. outfielder and current Nationals manager. ... RHP Stephen Strasburg (lower back tightness) threw from flat ground Wednesday, and the Nationals hope he will make his next start Sunday.