Rafael Nadal will make his return to ATP competition for the first time since January when he plays Flavio Cobolli in the Barcelona Open next week.
The Spanish star took a medical timeout, had the ankle taped and won the first game but after dropping his serve in the second game he called it quits, in another setback to a so-far disappointing 2024 campaign.
"Everywhere you look in Saudi Arabia, you can see growth and progress and I'm excited to be part of that," Nadal, who pulled out of the ongoing Australian Open with a muscle injury, said in a statement.
Defending champion Ons Jabeur said on Monday she had withdrawn from the Madrid Open with a calf injury after retiring from the Stuttgart Open at the weekend.
The 35-year-old Serbian remains top of the latest ATP rankings released on Monday bringing him level with the amount of weeks that Graf spent as women's world number one.
Before this week, no Chinese man had ever reached a tour-level final in the professional era or defeated a top 10 opponent.
Fritz, 25, rose to his highest career ranking despite a surprise loss to Wu Yibing in the Dallas semi-finals.
Novak Djokovic, Tunisian world number two Ons Jabeur and six other top players will form the first executive committee of the Professional Tennis Players Association (PTPA) as it fights for a seat at the table with the sport's governing organisations.
Novak Djokovic dug deep to save a match point on the way to a 6-7(8) 7-6(3) 6-4 victory over Sebastian Korda in the Adelaide International 1 final on Sunday ahead of this month's Australian Open.
Novak Djokovic books his place in the semi-finals of the ATP Tour Finals with an emotional 7-6 (8/6), 7-6 (7/5) victory over Milos Raonic.
Andy Murray celebrates his rise to the top of the world rankings with a 6-3, 6-2 victory over Marin Cilic as the Scot makes a strong start to his bid to win the ATP Tour Finals.
Troubled Australian tennis star Nick Kyrgios indicates he will play fewer tournaments in 2017 after his meltdown at the Shanghai Masters saw him slapped with an eight-week ban.
Tennis 'bad boy' Nick Kyrgios has been banned for eight tournament weeks for his conduct during his defeat at the Shanghai Masters last week, the governing body for men's tennis (ATP) says.
Novak Djokovic says he needed some luck to escape over Tomas Berdych for a place in the semi-finals of the ATP Toronto Masters.
Maria Sharapova plans to make good use of the time on her hands thanks to a two-year doping ban from tennis.
Novak Djokovic has denied "absurd" allegations in an Italian newspaper that he "wanted to lose" a match at the Paris Masters in 2007.