World No. 1 Rafael Nadal has achieved a Twitter milestone: 15 million followers.
Like many famous stars, our champ has used Twitter to forge a closer relationship with his fans as well as make announcements about his career.
Roger Federer has 10.5 million Twitter followers — roughly 4.5 million less than Rafa.
Currently in third place is Serena Williams with 9.5 million followers. Novak Djokovic (8 million) and Maria Sharapova (7.6 million) are not far behind.