Astros claim Nelson Velázquez, designate Shay Whitcomb ahead of series

The Houston Astros announced roster changes in preparation for a three-game series in San Francisco. They claimed outfielder Nelson Velázquez off waivers from the St. Louis Cardinals while designating infielder/outfielder Shay Whitcomb for assignment. Velázquez, who struggled at the plate with a.216 batting average this season, provides potential power that the Astros hope to harness. On the other hand, Whitcomb's performance fell short as he posted a.167 average in his limited major league appearances. Velázquez's addition comes at a critical time as the Astros aim to boost their lineup.

• 11:43 PMYahoo Sports — Astros announce series of roster moves ahead of 3-game set in San Francisco