No. 1 Stat of the Year- Novak Djokovic breaks both Federer and Sampras' No. 1 records .com
No. 1 Stat of the Year: Novak Djokovic breaks both Federer and Sampras' No. 1 records Tennis Magazine
No. 1 Stat of the Year: Novak Djokovic breaks both Federer and Sampras' No. 1 records Tennis Magazine