The Houston Astros haven't exactly been dormant when it comes to adding candidates to the starting rotation, but what they've done so far hasn't been encouraging.
Nate Pearson has a pedigree, but the big league track record leaves a lot to be desired. The club's latest addition, Ryan Weiss, is coming over from South Korea as a complete unknown. These two have their place; the Astros need rotation depth with Hayden Wesneski, Ronel Blanco, and Brandon Walter all on the mend following Tommy John surgery, but neither is a realistic hope to fill the Framber Valdez-sized hole in the rotation.