Aníbal Sánchez allowed one hit in six scoreless innings, Howie Kendrick hit a three-run double and the Washington Nationals withstood a grand slam by rookie Austin Riley to beat the Atlanta Braves 14-4 on Wednesday night.

Sánchez (1-6) made a triumphant return to Atlanta, where he thrived in 2018, to earn his first win of the season. He allowed one hit and one walk with seven strikeouts.

Juan Soto and Matt Adams homered for Washington, which swept the two-game series and ended Atlanta’s streak of five straight series victories. The Nationals have won five of six.

Washington Nationals first baseman Matt Adams (15) drives in a run with a base hit in the first inning of a baseball game against the Atlanta Braves Wednesday, May 29, 2019, in Atlanta. (AP Photo/John Bazemore)
Washington Nationals first baseman Matt Adams (15) drives in a run with a base hit in the first inning of a baseball game against the Atlanta Braves Wednesday, May 29, 2019, in Atlanta. (AP Photo/John Bazemore)

Sánchez was perfect through 5 1/3 innings until Ozzie Albies singled to the gap in right-center. Sánchez then walked Charlie Culberson before recording two straight outs.

Sánchez came off the injured list before the game after recovering from a strained left hamstring. He had a 5.10 ERA through his first nine starts.

Right-hander Kyle McGowin, who replaced Sánchez, gave up four straight hits, including a grand slam to Riley, to open the seventh. Riley has hit seven homers and has 20 RBIs in his first 14 games.

Atlanta Braves starting pitcher Kevin Gausman (45) works in the first inning of a baseball game against the Washington Nationals Wednesday, May 29, 2019, in Atlanta. (AP Photo/John Bazemore)
Atlanta Braves starting pitcher Kevin Gausman (45) works in the first inning of a baseball game against the Washington Nationals Wednesday, May 29, 2019, in Atlanta. (AP Photo/John Bazemore)

The Nationals went through their full lineup in each of the first two innings. Washington had five hits, including consecutive run-scoring singles by Adams, Kurt Suzuki and Victor Robles, in the four-run first.

The Nats scored four more runs in the second. Anthony Rendon’s two-run triple over right fielder Nick Markakis was followed by Soto’s line-drive single up the middle, knocking Kevin Gausman out of the game.

Gausman (2-4) gave up eight runs, matching his career high, on eight hits and two walks while recording only three outs. The right-hander faced four batters without recording an out in the second. His ERA climbed from 4.33 to 5.56.

Washington Nationals pitcher Anibal Sanchez works in the fifth inning of a baseball game against the Atlanta Braves Wednesday, May 29, 2019, in Atlanta. (AP Photo/John Bazemore)
Washington Nationals pitcher Anibal Sanchez works in the fifth inning of a baseball game against the Atlanta Braves Wednesday, May 29, 2019, in Atlanta. (AP Photo/John Bazemore)

Soto led off the fourth with a homer to left-center off Touki Toussaint. Soto has a 13-game hitting streak. He drove in two and scored four runs. Adams drove in three.

TRAINER’S ROOM

Nationals: RHP Jeremy Hellickson (right shoulder strain) has been shut down from throwing due to continued shoulder soreness. He was placed on the injured list on May 21. … RHP James Bourque was optioned to Triple-A Fresno to clear a roster spot for Sanchez.

Washington Nationals' Juan Soto (22) follows through on a solo home run in the fourth inning of a baseball game against the Atlanta Braves Wednesday, May 29, 2019, in Atlanta. (AP Photo/John Bazemore)
Washington Nationals’ Juan Soto (22) follows through on a solo home run in the fourth inning of a baseball game against the Atlanta Braves Wednesday, May 29, 2019, in Atlanta. (AP Photo/John Bazemore)

2021 ALL-STAR GAME FOR ATLANTA

Before the game, Baseball Commissioner Rob Manfred announced the 2021 All-Star Game will be played at SunTrust Park. A group of former Braves All-Stars who gathered for the announcement included five Hall of Famers: Hank Aaron, Chipper Jones, Phil Niekro, Tom Glavine and John Smoltz.

UP NEXT

Washington Nationals first baseman Matt Adams (15) rounds second base after hitting a two-run home run in the fifth inning of a baseball game against the Atlanta Braves Wednesday, May 29, 2019, in Atlanta. (AP Photo/John Bazemore)
Washington Nationals first baseman Matt Adams (15) rounds second base after hitting a two-run home run in the fifth inning of a baseball game against the Atlanta Braves Wednesday, May 29, 2019, in Atlanta. (AP Photo/John Bazemore)

Nationals: Following a day off Thursday, the Nationals will open a weekend series at Cincinnati on Friday when LHP Patrick Corbin (5-2, 2.85) is scheduled to face RHP Tyler Mahle (1-5, 4.15).

Braves: The Braves, off Thursday, will remain home to open a three-game series against Detroit on Friday night. RHP Mike Foltynewicz (1-3, 5.67) is scheduled to face RHP Spencer Turnbull (2-4, 2.97).

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Washington Nationals pitcher Anibal Sanchez works in the first inning of a baseball game against the Atlanta Braves Wednesday, May 29, 2019, in Atlanta. (AP Photo/John Bazemore)
Washington Nationals pitcher Anibal Sanchez works in the first inning of a baseball game against the Atlanta Braves Wednesday, May 29, 2019, in Atlanta. (AP Photo/John Bazemore)
Former Atlanta Braves outfielder Hank Arron waves as former pitcher Phil Niekro applauds during a ceremony to announce that Atlanta will host baseball's 2021 All-Star Game, Wednesday, May 29, 2019, in Atlanta. (AP Photo/John Bazemore)
Former Atlanta Braves outfielder Hank Arron waves as former pitcher Phil Niekro applauds during a ceremony to announce that Atlanta will host baseball’s 2021 All-Star Game, Wednesday, May 29, 2019, in Atlanta. (AP Photo/John Bazemore)