Missing Player in Lineup

[RKBUmp]

If the DP is playing defense for anyone other than the flex, no one has left the game and nothing to report. There has not been a substitution. The only time a coach would need to report the DP on defense would be if they were to be playing pitcher or catcher so they would be eligible for a courtesy runner.

Now, NCAA does require all defensive position changes to be reported. So, under NCAA rules the DP would need to be reported as playing any defensive position.