Roger Federer: Secret to Swiss legend’s Grand Slam success revealed

ROGER FEDERER’s ball toss for his serve is one of the keys to him winning the big points that lead him to Grand Slam glory, claims Andy Murray's former coach Mark Petchey.

from Daily Express :: Tennis Feed https://www.express.co.uk/sport/tennis/920327/Roger-Federer-news-Grand-Slams-March-Petchey
via Express