Dominic Canzone homered for the second straight game to go with a two-run triple, Bryce Smith pitched eight strong innings and the Seattle Mariners beat the Nationals 10-2 Friday night in Washington.
Colt Emerson and Josh Naylor also homered for the Mariners, who had lost two straight.
Miller (3-0) allowed two runs on four hits and struck out seven without a walk. He has gone five or more innings in each of his six appearances this season and has given up two or fewer runs each time.
James Wood had two hits including his 19th home run of the season and Dylan Crews also homered for Washington, which was looking to bounce back after surrendering a 9-1 eighth-inning lead in an 11-10 loss at the San Francisco Giants on Wednesday.
The Nationals fell back to .500 overall and have lost four straight at Nationals Park, where they are 12-21.
Washington starter Zack Littell (6-5) had gone 6-0 with a 2.27 ERA over his past seven starts before today. He allowed five runs on four hits over 1 2/3 innings.
The start of the game was delayed two hours and 11 minutes by rain.
Randy Arozarena singled leading off the second and Luke Raley walked. Canzone scored both runners with a triple off the wall in center. Canzone scored when Miles Mastrobuoni flew out to right to bring the lead to 3-0. Jhonny Pereda singled and Emerson homered to center to cap the second inning onslaught.
Wood homered leading off the bottom of the fourth to cut the lead to 5-1.
In the Seattle fifth, Cole Young singled with one out and Julio Rodriguez walked. With two outs, former National Victor Robles walked to load the bases. Young scored on a wild pitch by Riley Cornelio and Raley followed with a two-run single to make it 8-1.
Canzone led off the eighth with a home run off Paxton Schultz.
Crews homered off Miller in the eighth to make it 9-2, but Naylor got it back with a solo shot in the ninth off of Gus Varland.
