Navratilova Identifies Key Factor in Djokovic Missing Calendar Grand Slam in 2021
Novak Djokovic was very close to winning a Calendar Grand Slam in 2021, but ultimately, he didn’t, and Martina Navratilova named an issue that stood in his way. Calendar Grand Slam is a very rare achievement in tennis. The is only one man that managed to do it, and it’s Rod Laver, who first did…