Hendricks is pitching Saturday so normal rest would put him at the Thursday start. If they stick with that then Lester would be in line for Friday. But that would leave Quintana on 10 days rest for one of the Saturday DH and then Montgomery and/or Chatwood in the other game. My guess is they don't want either of those guys pitching in the doubleheader, since they are bound to get pulled early and tax the bullpen in at least one game. Then Monday the 23rd becomes an issue, since none of the current 5 would be on normal rest. Maybe they come back from the break with Quintana and Montgomery each coming off 8 days rest, then let Hendricks and Lester handle the DH with the hopes of saving the bullpen. Then it is all hands on deck for the Sunday game. They have to be ready to dial back Montgomery's innings. Maybe they'd be better off using Chatwood/Montgomery as a piggyback situation and calling up Underwood. Then again, we could be due for a Casey Coleman "take one for the team" start in this series. Anyway, this is a long way of saying that the 5 game series in 4 days coupled with 2 guys who can't be counted on for 6 innings means there are about a million combinations that can happen before we get to July 25/26. It depends on how they deal with the DH and who does/does not make it through 5 innings.