I’m not sure if the opener strategy will catch on and spread, but it has worked for some teams.
The plan need not mess up the other 4 starters’ rythym, or the pitcher you use for 4-5 innings after you pull the opener, if that guy has been used in relief for a while up to the point where he’s needed.
For example, say we’ve been using Andriese out of the pen for a month, sometimes for 3-5 IP, then a starter needs to miss a start. It’s not messing Andriese up by brining him in the game after an opener, and probably not even if he is used that way for more games than just one here and there.
To me, the jury is still out on the concept, but hey, I’m for robo umps.