The Astros are without starting shortstop Tommy Manzella, but they won't look outside the organization for help. They are relying on rookie Oswaldo Navarro and veteran infielder Geoff Blum to split time at the position. "We're comfortable giving Geoff playing time over there and as is the case with [Chris] Johnson and [Jason] Bourgeois and [Jason] Castro, we have to find out about Ozzie," general manager Ed Wade said. "He's only about 26 years old, and if he can show the steady play he showed at [Triple-A] Round Rock at this level, then it behooves us to give him a shot instead of somebody with experience that doesn't carry the upside because of age or whatever. "Right now we're not actively looking for a shortstop. That said, if something came along we thought would make sense, we'd pursue it."