He's got a 2.27 ERA since his June 4th start. 10 K/9, 3.03 BB/9. Only hiccup was the blister.
I mean if Gray can work on pitching at the MLB level, why can't Cavalli?
I think there's a good chance that Cavalli is called up by the of the month and Gray gets shut down a month early. Gray is quite a bit over the max innings he's thrown in a season and being the Nats, they want to baby his arm just a bit.