If Djokovic, Federer, Nadal retired today, I'd consider Novak no. 1: Becker

Six-time Grand Slam champion Boris Becker said if Roger Federer, Rafael Nadal and Novak Djokovic retired today then for him Djokovic would be number one. Djokovic's ex-coach added that number of weeks spent at number one is "important" for a tennis player. Djokovic has been ranked one for a total of 353 weeks compared to Federer's 310 and Nadal's 209.