FILE - Goran Ivanisevic, left, a former tennis player and coach of Serbia's Novak Djokovic, watches as he plays Switzerland's Stan Wawrinka in a men's singles match on day five of the Wimbledon tennis championships in London, Friday, July 7, 2023. Djokovic has split with coach Goran Ivanisevic, ending their association that began in 2018 and included 12 Grand Slam titles for the Serbian tennis player, Djokovic wrote in a post on Instagram published Wednesday, March 27, 2024. (AP Photo/Alberto Pezzali, File)
FILE - Serbia's Novak Djokovic, left, gestures as talks with coach Goran Ivanisevic during a practice session ahead of the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 13, 2023. Djokovic has split with coach Goran Ivanisevic, ending their association that began in 2018 and included 12 Grand Slam titles for the Serbian tennis player, Djokovic wrote in a post on Instagram published Wednesday, March 27, 2024. (AP Photo/Mark Baker, File)
FILE - Serbia's Novak Djokovic serves as his coach Goran Ivanisevic watches during a practice session ahead of the Australian Open tennis championships at Melbourne Park, Melbourne, Australia, Saturday, Jan. 13, 2024. Djokovic has split with coach Goran Ivanisevic, ending their association that began in 2018 and included 12 Grand Slam titles for the Serbian tennis player, Djokovic wrote in a post on Instagram published Wednesday, March 27, 2024. (AP Photo/Andy Wong, File)