SAN FRANCISCO - Hours after the Houston Astros finalized a roster move Tuesday meant to provide help against left-handed pitching, a moment to showcase it materialized. Its overall .706 OPS against lefties ranked 17th in the majors, middling for a lineup that has often skewed right-handed. Three of the Astros' first four hitters reached, loading the bases with one out. His was one of five plate appearances the Astros took with the bases loaded in the first two innings against Whisenhunt. This article originally published at Houston Astros' scuffling offense needs more from its heavy hitters as downturn deepens.