A four-time Grand Slam champion, Alcaraz said he was too focused on what weapons British left-hander Jack Draper might bring and unable to calm the pre-match jitters that prevented him from rising to the occasion.
Novak Djokovic said shared experiences with Andy Murray make the Scot the "perfect coach" as he bids to win a record 25th Grand Slam in Australia in January.
Alexander Zverev secured a spot in the last four of the ATP Finals on Friday with 7-6 (7/5), 6-4 victory over Carlos Alcaraz which leaves the Spaniard's destiny out of his hands.
World number four Daniil Medvedev said the ATP Tour calendar needs to be refocused around the Grand Slams and Masters 1000 events with the lower-tier ATP 250 tournaments moved to an optional slot later in the year.
The small furry objects that are the focus of every tennis player's energy are spinning the stars at the ATP finals into a fury and leaving them deflated.
Novak Djokovic said on Tuesday he will not defend his ATP Finals title due to an "ongoing injury" which has ended the 24-time Grand Slam champion's season.
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.
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.
