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.

As tennis legend Rafael Nadal prepares to retire from the sport with his final tournament at the Davis Cup in Malaga, Spain this week, he received a

Roger Federer penned a heartfelt tribute to Rafael Nadal before the Spaniard's retirement from professional tennis.