The Twins are ruining
his season stats
The Twins have stuck him with four of those losses and a good portion of that ERA. (When he's not facing the Twins, his ERA this season is 3.36, which is still more than a run worse than last season but really isn't bad at all,)
The strikeout rate is down, but still well above average. (He whiffed 9.5 men per nine innings last season, a bit less than 7.3 per nine this year). He walks roughly one man for every four strikeouts. He still looks to me like an elite pitcher.
He's also a bit of a frustrated one, because the Royals have been bad for years and he's getting tired of waiting for reinforcements.
Prospect gurus drool over the Kansas City farm system; years of drafting early have resulted in a growing stockpile of talent. Unfortunately, almost all of it is in Double A or lower, and the Royals didn't even bring any of it up for a September look-see.
So here's Greinke, from the above link, speaking about a month ago on the outlook: