Nick Bollettieri, who never competed in elite tennis but was once the world’s most famous tennis coach, developing 10 players who reached the No. 1 international ranking in singles, died on Sunday at his home in Bradenton, Fla. He was 91. David R. Legge, a journalist who is writing an authorized biography about Bollettieri, confirmed his death. Legge said Bollettieri began having renal problems several months ago and that his health had deteriorated since then.
Bollettieri was inducted into the International Tennis Hall of Fame in Newport, R.I., in 2014 as a “contributor” to the game.