Originally Posted by JackB1
watch this video referenced above
I believe its Raonic. Freeze it at .04 and you see his palm facing the sky.
both ways are possible...
at the trophy position, if the racket faces the right fence, then it will face the sky momentarily during the transition into the back scratch racket drop.
at the trophy position, if the racket faces the opponent, then it doesn't need to see the sky at all (Edberg is one example)