I translate "C" as the DP could be batting anywhere from 1 to 9. That means the FLEX could replace them and bat in their spot, anywhere from 1-9. They could be batting in the 4 spot, they could be batting in the 6 spot, etc. So technically, they could "bat anywhere in one of the nine positions of the batting order". You have to think in broad terms, not in single game terms.
I also agree it is poorly worded
.
|