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The son of Italian immigrant parents, Bollettieri served in the US army and dropped out of law school to become a coach, shaping the careers of top names including Andre Agassi, Serena and Venus Williams, Monica Seles and Maria Sharapova.
Sharapova announced the birth of her first child Theodore on Friday on social media.
The Russian five-time Grand Slam champion, who retired from the sport in 2020, shared the news on Instagram to her 4.2 million followers.
The retired tennis star announced news on Instagram.
The 22-year-old twice Grand Slam champion raked in $37.4 million in prize money and endorsements over the last year.
Factbox on Russia's Maria Sharapova who announced her retirement from tennis on Wednesday at the age of 32.
'Tennis - I'm saying goodbye,' Sharapova said in an article for Vogue and Vanity Fair magazines.
The 32-year-old Sharapova was clearly still hampered by the shoulder injury that had restricted her to one previous competitive outing since her opening-round exit at last year's US Open.
The 32-year-old will join current world No. 1 Ashleigh Barty, Naomi Osaka and Karolina Pliskova in a strong field at the Queensland Tennis Centre from January 6 to 12.
Williams, returning to the US Open after last year's infamous final in which her row with the chair umpire overshadowed Naomi Osaka's maiden Grand Slam victory, used her trademark power to overwhelm Sharapova in the first New York meeting between two of the sport's biggest names.