Snell (10-4) walked Trea Turner and Bryce Harper to open the game before retiring 18 straight, striking out five straight at one point. Anthony Rendon doubled leading off the seventh for the first of Washington’s two hits.
Kiermaier’s first home run of the season came during a six-run second inning against Gio Gonzalez (6-5).
It was the eighth loss in 11 games for the Nationals.
DETROIT (AP) – Jed Lowrie hit a tiebreaking solo homer in the top of the ninth inning to lift Oakland over Detroit on a historic day for Edwin Jackson.
Jackson allowed a run and six hits in six innings in his first appearance for the A’s, tying a record by playing for his 13th major league team. Called up from Triple-A, the 34-year-old righty matched the mark for most clubs set by former reliever Octavio Dotel.
The A’s trailed 4-1 after Nicholas Castellanos hit a three-run homer in the seventh, but Oakland scored three in the eighth off Joe Jimenez. Then Lowrie connected for his 12th homer, barely fair down the line in right field off Shane Greene (2-4).
Lou Trivino (6-1) got the win in relief, and Blake Treinen pitched the ninth for his 18th save. The A’s have won seven of nine.
All five Rangers runs in the decisive sixth inning came after it appeared that Chirinos had struck out for the second out with two runners on base. It looked as if Austin Hedges had the ball secured in his mitt that kicked up the dirt when he reached down.
Umpire Tony Randazzo initially indicated Chirinos was out. But that was changed to a foul ball after a discussion among all four umpires, and Chirinos lined an RBI single on the next pitch by Craig Stammen (4-1).
BALTIMORE (AP) – Dee Gordon’s slick seventh-inning bunt was the lone hit in a two-run uprising that put Seattle ahead for good, and the Mariners beat the Orioles for just their second win in eight games.
Denard Span homered for the Mariners, who benefited from 10 walks and a pivotal wild pitch to get back on track.
Felix Hernandez (7-6) allowed three runs on four hits over six innings, and Edwin Diaz worked the ninth for his major league-leading 28th save.
NEW YORK (AP) – Josh Bell hit a two-run homer, Gregory Polanco also went deep and the Pirates took advantage of some dreadful defense by the Mets to snap a five-game losing streak.
In a series opener between tumbling teams, Pittsburgh built a five-run lead and held on to hand the Mets their seventh straight defeat before a mostly quiet crowd of 22,135. New York is 6-24 in its last 30 games.