The Astros will go with a rotation of:
SP1: Wandy
SP2: Lucas Harrell
SP3: Bud Norris
SP4: J.A. Happ
SP5: Kyle Weiland
Here's who they would face (if this is, indeed, the final order):
Friday: Wandy vs. Jeremy Guthrie
Saturday: Harrell vs. Jamie Moyer
Sunday: Norris vs. Juan Nicasio
Lyles has been sent to OKC, while Rule 5 picks Rhiner Cruz and Marwin Gonzalez have made the team (and if they get optioned off the team, go back to their respective former teams).