The Yankees are clearly in no rush to get Joba back despite the bullpen struggling more than it did in the beginning of the season. He is getting over two major injuries after all, Tommy John Sugery in his elbow and an open dislocation in his ankle, so it might not be a bad idea.
His rehab is for a maximum of 30 days and then the Yankees would have to assign him to a minor league team if they didn’t think he was ready. That decision needs to come by August 8. However, it is unlikely to take that long. I will not offer out a guess though because I keep doing that and then the Yankees keep tacking on one more rehab appearance. He’ll be back by the 8th.
In Joba’s seven rehab appearances with the GCL, High-A, and Double-A teams, he has tossed 9.1 innings and allowed just one run, a solo home run, on four hits with 10 strikeouts and one walk. He made back-to-back appearances just once and twice pitched as many as two innings.