not likely, this time

I understand it is a widely used trick , which is legal, by the way.

But Djoker was serving for the match at 6:5. He did not have to use this trick if he was healthy. He can just close Nadal out.  He made tons of UE towards the end of 3rd set. He was clearly bothered by his back.

I also heard one of the commentator said on TV that the official trainer told her Djoker had a back muscle spasm.

I think something wrong with Nadal and Djoker should tip that trainer well as he is too efffective.