(Photo credit: Brad Mills-Imagn Images)

Matt Chapman drove in the go-ahead run in the top of the 12th inning and the San Francisco Giants beat the Nationals 7-6 Saturday in Washington, D.C.

Chapman led off the 12th against Cionel Perez (0-2) and grounded a single to left, scoring automatic runner Luis Arraez.

Caleb Kilian (1-0) pitched two innings for the win. The automatic runner did not advance in either inning and Kilian only allowed one base runner on an intentional walk.

The Nationals loaded the bases with no outs in the tenth, but Ryan Walker got two strikeouts and a ground out.

Heliot Ramos had three hits including his second home run in two games as San Francisco won its third straight.

Wood hit his seventh homer of the season and scored three runs for the Nationals.

With Washington trailing 6-5 in the ninth, Jorbit Vivas doubled against Walker leading off and went to third on a fly out. After Wood was walked intentionally, Curtis Mead hit a grounder and Vivas was thrown out at home. Brady House tied the game when he blooped single to center and Wood scored before Mead was thrown out at third.

Wood led off the bottom of the first and homered to give Washington a 1-0 lead.

Jung Hoo Lee singled with one out in the second and Ramos doubled, but Lee was thrown out at home. Drew Gilbert followed with a single to right, plating Ramos with the tying run.

The Nationals loaded the bases as the first batters reached in the second. Drew Millas grounded into a force at home, but Wood was hit by a pitch to force in a run. Luis Garcia, Jr. singled in two runs and Jose Tena singled in another to make it 5-1.

An error by third baseman Vivas gave the Giants runners on first and second with one out in the third and Casey Schmitt lined a two-out double to left that scored two runs, one coming across on a fielding error by Daylen Lile.

Lee singled off Parker with one out in the sixth and Ramos followed with a shot to left to tie it.

Willy Adames singled leading off the seventh and went to second on a wild pitch. Rafael Devers lined a two-out single to left, scoring Adames to give the Giants a 6-5 lead.

Giants starter Adrian Houser gave up five runs (four earned) on seven hits over 5 2/3 innings. His Nats counterpart Cade Cavalli gave up three runs (one earned) on seven hits in four innings.

--Field Level Media