Andy Oliver

Anybody have any recent information on Andy Oliver?

I've been really intrigued by him; he had an up and down college career, but a lot of talent, and BA I know thinks of him pretty highly. He's struggled at times this year but has strung together 3 nice starts in a row. He seems to be walking too many guys (4.17/9), and his GO/AO ratio isn't great, but he's already at AA and the Tigers don't have a ton of high upside guys at the end of their rotation. I was just trying to get a feel on if he's improving or if he's going to continue to be inconsistent.