Astros look to remain perfect this season vs. A's

(Photo credit: Troy Taormina-USA TODAY Sports)
A couple of hard-luck left-handers go head-to-head Friday night when the visiting Houston Astros aim for their eighth consecutive win without a loss against the Oakland Athletics this season.

Houston's Framber Valdez (7-6, 2.76 ERA) and Oakland's JP Sears (1-6, 3.99), a pair of six-game losers despite respectable ERAs, are scheduled to duel one night after J.P. France and Ho