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HOUSTON (AP) - Dallas Keuchel pitched a four-hitter and Robbie Grossman homered to cap a six-run first inning that sent the Houston Astros over the Oakland Athletics 8-1 Wednesday.

Keuchel (10-7) pitched his fourth complete game of the season, tying Dodgers ace Clayton Kershaw for the major league lead.

The Astros won the series from the AL West-leading Athletics.

Marc Krauss beat out Oakland's try for a double play in the first, and the Astros went on to match a season high for runs in an inning.

Keuchel (10-7) struck out five and walked three. Josh Donaldson hit his 23rd homer for Oakland's only run.

Jason Hammel (0-4) remained winless in four starts since the A's acquired him with pitcher Jeff Samardzija from the Cubs earlier this month. Hammel was 8-5 before the trade.

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