Miller's dazzling play wasn't limited to offense on Friday night. He also had a nice night on defense, starting a nifty double play in the fourth inning by flipping a grounder hit by J.D. Martinez to second baseman Nick Franklin. Franklin barehanded the ball and threw it to first to complete the double play.
Barnes became the second player this season to hit for the cycle against the Mariners. Mike Trout of the Angels did it on May 21.
It is the eighth time an Astro has hit for the cycle and the first time since Luke Scott did it on May 28, 2006, against Arizona.
Barnes is the first right-handed hitter to accomplish the feat since Craig Biggio did it on April 8, 2002, at Colorado. Barnes pumped his fist after he beat the throw into second base on his double.
Saunders walked Justin Maxwell with one out in the sixth before a single by Barnes. He was replaced by Yoervis Medina after Matt Dominguez drew a walk to load the bases.
Pinch hitter Brett Wallace grounded into a force out that scored a run to cut the lead to 6-3.
Wallace added a two-run homer in Houston's three-run eighth inning.
Kendrys Morales singled to start the fourth inning. Seager gave Seattle a 2-1 lead with his shot to left field. Norris plunked Michael Saunders with one out before walking Mike Zunino. Dustin Ackley followed with a double that rolled into the left-field corner to score two and push the lead to 4-1.
Houston's Jason Castro hit his 26th double of the season in the first inning to pass Brad Ausmus for most doubles by a catcher in team history. Ausmus had 25 in 1997.
NOTES: The series continues Saturday when Seattle's Hisashi Iwakuma (8-4) opposes Erik Bedard (3-6). ... Houston will recall RHP Jarred Cosart from Triple-A Oklahoma City on Tuesday to start against Oakland. The 23-year-old took a no-hitter into the seventh inning and got the win, allowing just two hits and no runs in eight-plus innings in his major league debut just before the break. He was optioned to Oklahoma City after the game, but is scheduled to stay this time and be Houston's fifth starter.