The first one was J.B. Bukauskas who could profile as a reliever according to Jeremy Booth of Program 15. The Astros will try to develop him as a starting pitcher though. Michael Feliz was brought up as a starter but is in the bullpen now.
One of the other selections, the Astros drafted Joe Perez as a third baseman. Why is that a big deal, because he is better known for his pitching than his hitting? According to Baseball America, Perez can throw 99 mph but sits in the mid-90s. That was, before being shut down due to his impending Tommy John surgery later today.