Nadal and Djokovic star as Spain and Serbia make winning starts at ATP Cup

• Nadal and Djokovic start new season with satisfying victories• 'I managed to kind of weather the storm,' says Serbian It has been six weeks since Rafael Nadal dragged Spain through eight singles and doubles wins in five days to Davis Cup victory in Madrid. Such a transcendent effort from a 33-year-old after becoming the oldest ever ATP year-end No 1 was deserving of a long rest, but there is no such thing as rest in tennis. In Saturday's ATP Cup action, both Nadal and Novak Djokovic return...