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.

Spain’s Davis Cup captain, David Ferrer, has described Rafael Nadal’s farewell ceremony after his final match as “a bit sad” and “watered down.” In a candid interview, Ferrer highlighted the absence of “very important people” who had played key roles in Nadal’s illustrious career,

Roger Federer says Rafael Nadal made him enjoy tennis even more during a rivalry that spanned 40 matches over 15 years.