Padilla isn't exactly the ace that Texas was looking for. He had a 9-12 record last year with a 1.50 WHIP and 4.71 ERA. He also had 74 walks to only 103 strikeouts. Not a good ratio.
Here is what ESPN says about Padilla:
The truth is that the Rangers might not be able to ever get that dominant starter until they figure out how to keep baseballs in that ballpark.
The one possible exception? Roger Clemens, whose splitter could likely make that irrelevant. Let's just hope he doesn't like the park.