Robinson Tejeda is a hot topic in the Royals blogosphere right now, as well he should be considering he has been a bright spot in a dark, dark year. But I really don't get the Kyle Davies comparisons. Yeah I know it appeared Davies broke out last year and had the great September but this season is more line with the rest of his career. 2008 was the first time he had an ERA+ above 100. Tejeda, meanwhile, has had only one season below 100. Let me repeat that - Robinson Tejeda has only one sub-100 ERA+ season in his career, 2007.
If you take out his 2006 season (and why can't we? we throw out Greinke's 2005 season all the time) his career ERA goes from 4.45 to 3.67 and his K/9 jumps from 7.5 to 7.9. His H/9 drops from 8.0 to 7.1. B-R's awesome play index shows only two pitchers in baseball (min. 150 IP) with an ERA 3.67 or lower, a K/9 of 7.9 or higher, and a 7.1 or lower H/9 (Tim Lincecum and Clayton Kershaw).
As a Royal Tejeda now has a 3.04 ERA in 103.2 innings with 120 K's and a 142 ERA+. That's a 10.41 K/9 and that's why the Davies comp is a bad one.