The MLB rule is that a pitcher has to declare their handedness from which they throw in the age old ambidextrous pitcher vs the switch hitter. Also the rule is that a pitcher must face at least one batter outside of an injury occurring.
Are there any obligations for a team to use their starter more than one batter to kill lineup stacking.
I understand there are some preventative measures naturally with having to have a couple long relievers of each handedness always ready to go and burning an initial bullpen arm but I could see this as an effective strategy that’s going to continue to push the envelope in new ways. Could the starter method be killed off altogether for having your best pitcher going everyday? It will be interesting to see how the baseball purists try to institute rules to prevent it (maybe extend a starter to pitch at least a set amount of innings?)