Novak on Instagram:Β β€œSometimes you have to cha…

Novak on Instagram:Β β€œSometimes you have to change it up to get a new perspective 🀨 on your arm πŸ’ͺmovement . Training today with an American football 🏈. Don’t worry, I’m not leaving tennis any time soon! πŸ˜œβ€