Astros starting pitcher Dallas Keuchel (5-8) tossed a quality start but was not backed by enough run support as he suffered his eighth loss of the season Saturday night against the Mariners. The left-hander allowed three runs on four hits and two walks while striking out eight over seven innings of a 3-1 defeat.

Keuchel has surrendered 12 earned runs combined over his last four starts (26 2/3 innings). He is scheduled to make his next start Friday at Oakland. He is 0-1 with a 4.00 ERA in four appearances (two starts) against the A's this season.