Astros signed 1B Carlos Pena to a one-year, $2.9 million contract. Pena will have a chance to earn $1.4 million more in incentives. The Astros' plan is to have Pena and Brett Wallace share the first base and DH duties, though Pena figures to wind up getting the bulk of the time at first since he's the superior defender. The 34-year-old batted just .197/.330/.354 with 19 homers for the Rays in 2012.