There is no count to work with this pitcher. Look at his numbers.
Diamond has two attributes. Ground balls. Low walk total.
He is hittable. Gives up hits. Despite grounder tendencies, gives up homers.
So, Reds can stand around waiting for the occasional walk. Or they can look for good pitches to hit early in the count.
If you're waiting for his control to fall apart by standing there like a statue, good luck. Probably won't happen.