In 111 innings, the 25 year old had a 5.96 ERA and 1.54 WHIP this season.
In my opinion, the deal is a great move for the Angels, but strange one for the Rays. Kazmir does not have great numbers this year, but he is still young and has a lot of potential. In his career he is 55-44 with a 3.92 ERA, 1.39 WHIP, and averages 9.4 strikeouts per nine. In addition, he has World Series experience.
Most of his struggles can be related to injury, but when healthy he is a terrific pitcher. He could have been a key peace for the Rays in years to come. If anything, it takes out the $20 million he is owed for the next two seasons.