This actually doesn't seem that complicated. Our last six games have been started by:
Tuesday: Gray
Wednesday: Ryan
Thursday: Maeda
Friday: Mahle
Saturday: Lopez
Sunday: Ober
Our next three starters are listed as:
Monday: Gray
Tuesday: Ryan
Wednesday: Maeda
It seems pretty likely that Mahle starts Thursday and Lopez Friday. If they don't send Ober down immediately to bring up another reliever, he's likely to stay around all week and pitch on Saturday. If someone gets shelled and the bullpen is depleted, they could still option him and go with Gray and Ryan on normal rest on Saturday and Sunday.
Sure looks like they've switched to a six-man rotation without announcing it that way. They've hinted going the six-man route, and if they're going to do that, now is the time, since they are in a string of 13 straight games.
I'm guessing it stays that way for the time being and will be resolved in one of several ways:
1. One of them is forced to the IL at some point, and it seemlessly shifts back to a five-man rotation.
1a. A variation on this is if they decide to skip a start for someone who appears to be tired. And once we hit June, that's easy to do, since there are four off days in the month.
2. One of them stinks on several occasions and gets pulled from the rotation. With each of them having some level of cache, I don't see this one as likely, but Ober is most likely, given his rookie status.
3. All of them stay healthy, pitch spectacularly, and Twins Daily readers break out into spontaneous rejoicing and praising of the front office. That last part seems unlikely, since, well, this is the Internet.