Former British number 1 Johanna Konta announced her retirement from the sport of tennis on December 1, ending a short but memorable career.
Emma Raducanu rose to the top of tennis quicker than anyone expected. But staying there will require management - both on and off the court.
Djokovic has not played since losing in straight sets to Russian Daniil Medvedev at Flushing Meadows in September.
Marta Kostyuk beat Emma Raducanu 6-2 6-1 in under an hour at the WTA 250 event in Cluj-Napoca, with the Brit committing 41 unforced errors.
After winning the U.S open, Emma Raducanu announced that she would no longer be working with former Davis Cup player Andrew Richardson.
The 25-year-old, Ashleigh Barty, has not played since she was knocked out in the third round at the U.S. Open in September.
Serena Williams has remained a force in the sport of tennis since she made her debut and, even now, remains the woman to beat on the WTA tour.
This isn't the first time he's chastised the British tennis system for failing to prioritise the grassroots development of tennis players.
Emma Raducanu took New York by storm, en route to her victory as she became the first qualifier in history to claim a grand slam.
Novak Djokovic has expressed the desire to win more Grand Slam titles despite missing out on the Calendar Grand Slam.