Roger Federer survives in Shanghai as Rafael Nadal crashes out on day of shocks
Swiss player saves five match points against Leonardo Mayer

Roger Federer joined Novak Djokovic in the third round of the Shanghai Masters after winning by the skin of his teeth Wednesday, while Rafael Nadal crashed on a day of shocks.
World number three Federer will unseat second-placed Nadal in the ATP rankings on the back of his incredible victory.
The Swiss player saved five match points, including three at a third set tie-break, before converting his first chance to seal a gripping 7-5, 3-6, 7-6 (9/7) victory against Leonardo Mayer.
The 17-times grand slam winner needed to draw on all his years of experience to remain level-headed as he closed out the game, leaving his Argentine opponent distraught as he trudged off the court.
Second seed Nadal, meanwhile, battled the early stages of appendicitis and a ruthless Feliciano Lopez in his 6-3, 7-6 (8/6) opening game loss.
“I lost. Feli played better than me. That’s it,” Nadal said afterwards when asked about his condition.