Astros signed C Chris Snyder to a one-year contract. No financial terms of the deal are available, but it also includes a mutual option for 2013. Snyder, who will turn 31 next month, played in just 34 games this season due to a serious back issue, but the Astros evidently think he'll be ready for the start of the season. He figures to serve as the primary backstop until Jason Castro (foot) is healthy.