Nick Bollettieri obituary: famous coach of tennis stars dies at 91 - Legacy.com
Iconic tennis coach, Nick Bollettieri - Dead at 91
Tennis Players Want a Choice About Vaccination; Tours Encourage It - The New York Times
Nick Bollettieri, coach to many tennis stars, dead at age 91 | WLRN
Tennis is truly for all ages - The Columbian
IMG Academy on Twitter: "Nick Bollettieri, the legendary tennis coach and founder of Nick Bollettieri Tennis Academy, which served as the foundation for today's IMG Academy, has passed away. He was 91