A person's anaerobic threshold has been reached when their body is under extreme conditions and the burning of oxygen can not keep up with the body's demands.
Novak Djokovic captured his second straight Wimbledon title and the third of his career by defeating Roger Federer 7-6, 6-7, 6-4, 6-3 in Sunday's men's final at the All England Club. Djokovic is the first man to repeat as Wimbledon champion since Federer won five in a row between 2003 and 2007.
Power Ranking the Top 20 Men's Tennis Players After U.S. Open 2013. 1 of 21. Rafael Nadal may have won the 2013 U.S. Open title, but Novak Djokovic is still the No. 1 ranked player in the world. The final showed some of their best tennis, and that both players are far ahead of the rest of the ATP tour.