>>Wacha To Get MRI

(St. Louis, MO) -- Righty Michael Wacha will undergo a follow-up MRI on his shoulder today. Wacha hopes to begin a throwing program after seeing the results of the test. This is the third MRI for Wacha over the course of a month.

>>Astros Fail To Sign First Overall Choice

The Houston Astros have failed to sign the first pick in this year's draft.

The Astros say they didn't reach an agreement with high school pitcher Brady Aiken before Friday's deadline.

The left-hander from San Diego's Cathedral Catholic was just the third prep pitcher to be selected first overall when he was taken last month. Aiken was also the first high school lefty to be drafted in the first five picks since Adam Loewen went fourth overall to Baltimore in 2002. The UCLA recruit has a fastball that hits 96-97 mph.