Jamaica's Elaine Thompson-Herah made Olympic history in Tokyo Tuesday, blazing to victory in the 200 metres to complete an unprecedented women's sprinting "double-double".
Frenchman Mouratoglou said Williams had been able to recharge during the break and that her appetite for titles had not waned.
Nadal has won the Australian and the French Open back-to-back and has the chance to become the first man to win all four majors in the same year
India all-rounder Stuart Binny, who owns the record of the best bowling figures in One-Day Internationals, announced his retirement from first class and international cricket on Monday.
Indian Wells organisers said on Tuesday that world number two Novak Djokovic had been placed in the tournament's draw but it was unclear if the Serbian would be permitted to enter the United States.
Djokovic had been favourite to win a 10th title at Melbourne Park and claim a 21st Grand Slam crown but the Serb now faces being deported from Australia.
Stanislavskyi holds the Guinness World Record as the world's oldest tennis player
Britain's Formula One world champion Lewis Hamilton claimed the inaugural Athlete Advocate of the Year Award for his involvement in the fight against racism.