His line from today's start:
5.2 IP, 4 H, 1 ER, 9 K, 3 BB, 100 pitches
He's still gotta learn to be economical, but a career high 9 strikeouts and only 4 hits and 1 run in 5+ innings clearly shows he is adjusting nicely to the rotation. He's learning to use his pitches in different combinations, and he's also learning to not let hits or jams bug him.
Something else that's very telling of his transition: the play he made at the plate on Edgar Gonzalez today shows me that he's aware of the situation around him, which is something that can get lost in the concentration it takes to switch from the bullpen to the rotation. I feel like the move of Joba to the rotation was not only played out very very well by the Yankees managerial staff and front office, but was perfect timing with the injuries and struggles of the other starters. Hopefully he will keep up the good work and will learn to throw 100 pitches in 6 or 7 innings rather than 5.