Player A hits his first serve. If Player B hits a screaming fast crosscourt return, so much so that Player A cannot even react and is stuck in the middle of the court, can Player A then challenge his own first serve?
Player A didn't (or couldn't) make a motion towards the return, so can it be argued that he stopped play after his serve – and get a replay or a second serve?
He can challenge but he wouldn't get replay of the first serve in any situation. If the serve was out, he would get a second serve.