It is the intent of the rule that the DP bats for the FLEX. Did you mean to say that the coach inserts the DP on defense for the FLEX?
If that is the case and the DP (and now starting pitcher for the visitors) may have a CR in the top of the 1st. If the pitcher does not face the first batter (one pitch), it is an illegal substitute and can be discovered by either team or the umpires. (3-4; 8-9-2)
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