Roger Federer and Rafael Nadal's rivalry on the courts may now be behind them, but the pair appear to be a long way from being friends according to the Spanish King of Clay

The intense rivalry between tennis icons Roger Federer and Rafael Nadal might have simmered down, but don't mistake that for a blossoming friendship. Even though Federer was quick to send his best wishes after Nadal announced his retirement following a Davis Cup defeat by the Netherlands recently,

Tennis legend Roger Federer wrote a heartfelt letter to Rafael Nadal on Tuesday before the Spanish star joins him in retirement. Nadal is participating in the Davis Cup in Malaga, Spain this week before saying goodbye to the sport he has played professionally since 2001.