PHOENIX — Stephen Strasburg struck out nine in 62/3 innings Saturday, and the Washington Nationals beat the Arizona Diamondbacks 2-1 for their third straight victory against the NL West leaders.

Arizona dropped its season-high fourth consecutive game. The Diamondbacks also lost a series for the first time after opening with 10 wins and two ties.

Strasburg (5-3) allowed one run and five hits in Washington’s sixth win in seven games. The Nationals stranded 11 runners, but Bryce Harper and Anthony Rendon each drove in a run.

Sammy Solis and Shawn Kelley each got two outs before Ryan Madson finished the five-hitter for his third save.

AMERICAN LEAGUE

ORIOLES 6, RAYS 3: David Hess pitched six effective innings in his big league debut, Jonathan Schoop hit two home runs and Baltimore won at home in the first game of a doubleheader.

Manny Machado also homered for the Orioles, who shook off an early deficit to extend their winning streak to four games – their longest run since last August.

YANKEES 7, ATHLETICS 6: Left fielder Brett Gardner threw out Matt Olson at the plate with the help of a replay reversal in the ninth inning, and New York won at home on Neil Walker’s run-scoring single in the 11th to avoid its first three-game losing streak since last August.

Gardner’s one-hop throw to the plate was slightly to the first-base side, and Gary Sanchez had to reach for it and try for a sweep tag at the sliding Olson.

TIGERS 4, MARINERS 3: Matthew Boyd pitched impressively until the seventh inning, and JaCoby Jones made a diving catch in the ninth to help Detroit hold on at home in the first game of a doubleheader.

Jose Iglesias hit a two-run homer for the Tigers, and Grayson Greiner contributed the first two RBI of his big league career. Boyd (2-3) allowed three runs and three hits in six-plus innings.

INDIANS 6, ROYALS 2: Francisco Lindor homered twice and doubled twice to help Cleveland win at home.

Lindor hit solo home runs in the third and seventh and scored four runs. His third career four-hit game extended his hitting streak to 13 games.

ASTROS 6, RANGERS 1: Charlie Morton struck out a career-high 14 in seven innings, and Evan Gattis, Brian McCann and Carlos Correa homered to back him up and help Houston win at home.

Morton (5-0) yielded four hits and a run without a walk to lower his ERA to 2.03 and extend his career-long winning streak to eight games dating to last season.

INTERLEAGUE

CUBS 8, WHITE SOX 4: Willson Contreras hit his third homer in two games and drove in three runs, and the Cubs won at home.

Contreras continued his surge after hitting two home runs and setting a career high with seven RBI in Friday’s 11-2 romp. He had an RBI single in the second inning, a two-run homer in the seventh and finished with three hits as the Cubs won their fifth straight.

NOTES

NATIONALS: Washington placed first baseman Ryan Zimmerman on the 10-day disabled list and promoted veteran infielder Mark Reynolds from Triple-A Syracuse.

Zimmerman has been hampered by a right oblique strain.

CUBS: Major League Baseball warned Ben Zobrist against wearing black cleats.

BREWERS: Right-hander Chase Anderson was scratched from his scheduled start against Colorado because of a stomach illness.

TIGERS: Right fielder Nicholas Castellanos left the second game of the doubleheader against Seattle because of an injured finger on his left hand.