An off-colour Alcaraz lost 6-1, 7-5 to Norway's Casper Ruud in his opening match on Monday and the 21-year-old cancelled a public training session the following day.
Athletes from Russia and Belarus, Moscow's closest ally in the 2022 invasion of Ukraine, are barred from the Paris Games except for the few who will compete as neutral athletes without flags or anthems.
Novak Djokovic was stunned 7-6(4), 6-2 by Matteo Berrettini in the Qatar Open first round on Tuesday as the Italian enjoyed his first win over the former world number one.
Here is what you need to know about the year's Australian Open:
Sweltering heat gripped the second-round action at the US Open on Wednesday
Learner Tien is the youngest American man to reach the third round of the Australian Open since an 18-year-old Pete Sampras in 1990.
Serena was rumoured to have dated Dimitrov in the past, adding an extra layer of intrigue to the occasion.
Zheng Qinwen saw off a spirited challenge from Diana Shnaider to secure a hard-fought 7-6(5), 6-3 win in their Pan Pacific Open semi-final on Saturday and set up a title clash against American Sofia Kenin.
Novak Djokovic was shocked by Botic van de Zandschulp 6-2, 3-6, 6-1 in the second round of Indian Wells on Saturday as the Serbian suffered an early exit at the hands of a tournament lucky loser for a second consecutive year.
Images from the men's singles action at the US Open on Sunday.
Alexander Zverev into ATP Finals semis after straight sets win over Carlos Alcaraz
Carlos Alcaraz suffered a shock 6-1, 7-5 defeat against Norway's Casper Ruud in his opening match at the ATP Finals
Rohan Bopanna and his Australian partner Matthew Ebden lost to Russian pair of Andrey Rublev and Karen Khachanov.
Jannik Sinner made it two wins out of two at the ATP Finals as he fought off Taylor Fritz in a high-octane clash inside the Inalpi Arena on Tuesday.
Rublev came into the tournament on a four-match losing streak, but has eased into the final, knocking out second seed Carlos Alcaraz on the way, and will face unseeded Canadian Auger-Aliassime for the title on Sunday.
Zverev and Rublev among dark horses for French Open
Russian Andrey Rublev beat Norwegian top seed Casper Ruud
IMAGES from Day 2 of the Wimbledon Championships, at the All England Lawn Tennis and Croquet Club, London, on Tuesday.
Tsitsipas, who triumphed at the Monte Carlo Country Club in the last two editions, was never in the mix against Fritz
Sinner won in Cincinnati this week to claim his fifth title of a breakout season before the revelation that he avoided a ban over two positive tests
Russia's Andrey Rublev overcame Grigor Dimitrov 7-6(7), 6-3 in their semi-final clash at the Shanghai Masters on Saturday, and will now face Hubert Hurkacz, who beat Sebastian Korda.
At the Hong Kong Tennis Open, top-seeded Andrey Rublev of Russia pocketed his 15th career title with a 6-4, 6-4 win over Finland's Emil Ruusuvuori.
Medvedev beats Rublev in Dubai for hard-court hat-trick
Images from the US Open men's singles second round matches, at Flushing Meadows, New York, on Wednesday.
World number one Iga Swiatek blasted past American Danielle Collins 6-3, 6-0.
Daniil Medvedev, the 2021 champion, will need to shake off a run of poor form if he is to mount a challenge.
World No 7, Rublev paired up with Ukrainian Denys Molchanov to win a doubles title in Marseille last week.
Fourth seed Alexander Zverev will play Brandon Nakashima as the former finalist looks to end his long wait for a maiden Grand Slam title.
'Of course, you don't wish this on anyone. You want these terrible things to be able to finish as fast as possible for all the people in the world to have a chance to have a good life.'
Australian Open organisers have issued a reminder to players and their entourages about their policy on "inappropriate flags" after a video emerged showing Novak Djokovic's father posing for pictures with fans holding Russian flags.
Serbia's Novak Djokovic outclasses Russia's Andrey Rublev to set up a meeting with unseeded Tommy Paul in the semi-finals of the Australian Open on Wednesday.
Andrey Rublev made the most of Holger Rune's nerves to win a see-saw Monte Carlo final 5-7, 6-2, 7-5 on Sunday, as the Russian's talent was finally rewarded with a Masters title.
'You cannot imagine, one player is going to die and then they're going to see'
IMAGES from Day 10 of the US Open, at the USTA Billie Jean King National Tennis Center, Flushing Meadows, New York.
A stellar season thus far has propelled the 43-year-old into the top 15.
The 35-year-old Serb was sent home from Australia on the eve of last year's event after a row about his COVID-19 vaccination status.
The unpredictable nature of the 2024 US Open has turned it into one of the most thrilling Grand Slam tournaments in recent memory.
Alcaraz topped the Red Group and will face Green Group runner-up Novak Djokovic in a mouth-watering semi-final.
Djokovic will next face Sinner in what will be his 46th Grand Slam semi-final, equalling the record of eight-time champion Roger Federer.
The Americans found their rhythm to wrap up a final-day victory