The Arizona Diamondbacks turn to Brandon Pfaadt, who, with his long-term contract, wouldn't seem to be a player they'd trade.

The Houston Astros and Arizona Diamondbacks meet Wednesday at Chase Field for the final game of their 3-game series.

The Astros completed a sweep of the Diamondbacks with a 4-3 win that left them, as of the game's end, with the best record in the American League. Christian Walker, the former Arizona first baseman, delivered the go-ahead hit in the top of the ninth.