Though he had only dabbled in the sport in high school, Bollettieri was the tennis director at Dorado Beach Hotel in
Puerto Rico in the late 1960s when it was a
Rockefeller resort. Seeing a template for other sports, International Management Group (
IMG) bought the academy from Bollettieri in 1987, but Bollettieri continued to manage and play a pivotal role in the development of the tennis academy and ancillary programs. In his final years Bollettieri coached top-tier players at the academy, and spent most of his time in Bradenton.
Off-court Bollettieri continued to teach and hold public speaking engagements worldwide, including a visit to teach students at Tri-State Athletic Club in Evansville, Indiana. He was also the instruction editor of
Tennis magazine. Over the course of his life, Bollettieri wrote two memoirs:
My Aces, My Faults with
Dick Schaap in 1996, and
Bollettieri: Changing the Game in 2014. Additionally, he was featured in the
Nick Bollettieri DVD Collection, a set of ten instructional DVDs that cover a wide range of practice methods.
Grunting controversy Bolletieri personally trained the majority of the controversially loud
grunters in tennis, leading to repeated accusations that he has been deliberately teaching grunting as a novel tactic in order to give his later generations of students an edge in competitive play. Bollettieri has denied teaching grunting as a distraction tactic, and says grunting is natural, "I prefer to use the word 'exhaling'. I think that if you look at other sports, weightlifting or doing squats or a golfer when he executes the shot or a hockey player, the exhaling is a release of energy in a constructive way". In 2011, after Danish player
Caroline Wozniacki (then world no. 1) publicly accused Bollettieri's students of cheating by grunting,
Women's Tennis Association Chairman Stacy Allaster stated that the WTA would be "talking to the Bollettieri academy" about the predominance of loud grunters from that institution and how it could be eliminated from the next generation of players. One year later, a division of Bollettieri's academy released a document calling grunting "unsportsmanlike" and acknowledging that it obscures the sound of string impact (as noted by
Martina Navratilova), resulting in "an increase in an opponent's decision error, and a slower response time". ==Notable students==