I can only speak for myself, but I just found Odorizzi to be extremely underwhelming during his first few times through the league in terms of both stuff and results. The velocity and the K rate weren't really there, and his AAA rate stats only ranged from pedestrian to good.
So if anyone else is like me, they might have kind of written him off as something less than he is, and they haven't really been paying attention to him this year especially after the garbage March/April.
I just Fangraphs.com'd him for the first time in months and I have to admit, his K rate knocked my buttplug clean out of my anus.