Grossman, Owens and Cain
UPDATE, 9:33 PM: Jon Paul Morosi of FOX Sports says that Pirates outfield prospect Robbie Grossman is headed to the Astros in the deal. The 22-year-old former sixth-round pick is batting .262/.374/.403 with seven home runs and 35 RBI in 94 games this season at the Double-A level. More to come.
UPDATE, 9:42 PM: According to Heyman, the Astros are also getting Rudy Owens, a 24-year-old left-hander with a 3.14 ERA, 1.17 WHIP and 85/25 K/BB ratio in 19 starts this season at Triple-A, and Colton Cain, a 21-year-old southpaw with a 4.20 ERA, 1.24 WHIP and 51/25 K/BB ratio in 16 starts this season at High-A.