https://www.sportskeeda.com/tennis/news-novak-djokovic-s-career-grand-slam-winning-racket-fetches-highest-price-ever-tennis-racket-auction
https://www.sportskeeda.com/tennis/news-novak-djokovic-s-career-grand-slam-winning-racket-fetches-highest-price-ever-tennis-racket-auction
. net