21-time Major winner Rafael Nadal prepares for his 18th Roland Garros. The second Grand Slam of the season kicks off next week, and Rafa is back on the practice court at his home in Mallorca, doing his best to recover from the injured foot and give himself a chance in Paris.Nadal has won 13 of the previous 17 Roland Garros titles, experiencing just three defeats at his beloved tournament and hoping to regain the title he lost to Novak Djokovic a year ago. Rafa missed the second …