Sierra, who had already checked out of her accommodation, learned only at lunchtime on Monday that Belgium's Greet Minnen had pulled out of the tournament and that she had been selected in the draw for a lucky loser spot in the main draw.
Poland's Iga Swiatek could become only the third woman since tennis turned professional in 1968 to win all of her first six major finals, joining Margaret Court and Monica Seles, but Swiatek is not taking the big-hitting Anisimova lightly.
India's Yuki Bhambri and his American partner Robert Galloway entered the third round in the men's doubles at Wimbledon, beating Portugal's Nuno Borges and America's Marcos Giron at the All England Club on Saturday.
Factbox on Kazakhstan's Elena Rybakina, who beat Belarusian Aryna Sabalenka 6-4, 4-6, 6-4 in the Australian Open final to win her second Grand Slam title on Saturday:
India's Yuki Bhambri and his American partner Robert Galloway progressed to the second round of men's doubles event at the Wimbledon with straight-sets win over Romain Arneodo of Monaco and Manuel Guinard of France on Wednesday.
'Who among Opposition party MPs has so much power that they raise some issue and the government implements it? The answer is no one except Raghav Chadha.'
Iga Swiatek bulldozed her way to a maiden Wimbledon title on Saturday to take her Grand Slam tally to six
Zeynep Sonmez is the first woman from Turkey to reach the second round of the Melbourne Park Grand Slam.
New Melbourne queen Rybakina happy to find highest level again
Nick Kyrgios will only feature in the doubles at the Australian Open, which begins at Melbourne Park on January 18.
Belinda Bencic won two tiebreaks to beat teenage Russian seventh seed Mirra Andreeva
Aryna Sabalenka swept to her fourth successive Australian Open final with a 6-2, 6-3 win over Ukrainian Elina Svitolina.
Backed by passionate Turkish fans, Zeynep Sonmez defeated Anna Bondar to reach the Australian Open third round and match her best Grand Slam run.
Jannik Sinner defeated Carlos Alcaraz in a high-octane final to claim his maiden Wimbledon trophy and fourth Grand Slam crown on Sunday.
Elena Rybakina held her nerve to outlast world No. 1 Aryna Sabalenka 6-4, 4-6, 6-4 in a thrilling Australian Open 2026 women's singles final at Rod Laver Arena on Saturday.
Iga Swiatek was the latest top player to suffer an upset loss in Montreal as the Wimbledon champion
The All England Club announced plans for redevelopment works to the grassy hillock outside Court One known among other nicknames as Henman Hill and Murray Mound.
Tough road for defending champion Keys
World number one Carlos Alcaraz arrives in Melbourne with only one mission in mind -- claim a first Australian Open title to become the youngest man to complete the career Grand Slam.
Iga Swiatek heads into Melbourne Park with the Australian Open title the only gap on her Grand Slam resume, but the world number two is keen to avoid setting herself targets for the new season and says her main goal is to improve her game.
Julian Cash and Lloyd Glasspool capped their dream summer with the Wimbledon crown and first Grand Slam title as a pair
Novak Djokovic and Carlos Alcaraz clash in the Australian Open final with history on the line as Djokovic chases a record 25th Slam and Alcaraz eyes a career Grand Slam.
Top trio eye Grand Slam glory with Sabalenka targeting third Australian Open crown
The tournament's once-robust pool of around 300 line judges has been cut to 80 and they will serve as "match assistants", who support chair umpires and step in should the ELC -- powered by more than 450 cameras -- fail in any of the 18 courts in use.
It will be an all-American quartet in the last eight at Melbourne as fourth seed Amanda Anisimova beat China's dark horse Wang Xinyu in their fourth round match on Monday.
Carlos Alcaraz powered into his third successive Australian Open quarter-final, beating Tommy Paul in straight sets in a match interrupted by a medical emergency.
World number one Aryna Sabalenka has been named WTA Player of the Year for the second consecutive season after spending the entire year at the top of the rankings.
Novak Djokovic took encouragement from his run to the Australian Open final and pledged to keep fighting at the Grand Slams after Carlos Alcaraz again denied his bid for a record 25th major title.
Tennis icon Venus Williams wed Italian model-actor Andrea Preti in Palm Beach, Florida.
Aryna Sabalenka fell 6-4, 4-6, 6-4 to Elena Rybakina on Saturday, the Russia-born Kazakh turning the tables on the Belarusian who beat her for the 2023 title.
Qualifier Arthur Fery delivered a stunning Australian Open win by beating 20th seed Flavio Cobolli on Sunday.
World number two Iga Swiatek joined a growing chorus of players demanding more privacy off the courts at the Australian Open after cameras captured Coco Gauff in a post-match meltdown that the American said should have been a personal moment.
Kyrgios, the 2018 Brisbane champion, is now ranked 673rd in the world with no protected ranking and will also need a wildcard to compete at Melbourne Park.
Neal Skupski and Christian Harrison won the Australian Open men's doubles crown, defeating Aussie wildcards Jason Kubler and Marc Polmans in straight sets in their first Grand Slam together.
Vintage Djokovic dethrones Sinner to set up Alcaraz final at Australian Open
Carlos Alcaraz says winning all four Grand Slams at 22 has only fuelled his hunger, but the world No. 1 insists he won't chase a calendar Slam, choosing instead to take the majors one at a time.
Sabalenka primed for Rybakina rematch with eyes on third Australian Open crown
Wimbledon organisers have 'zero appetite' to turn the Championships into a 15-day event
World number one Aryna Sabalenka enters the Australian Open in her familiar role as the hot favourite but unlike in the past two years the powerful Belarusian arrives without a title to defend or the momentum of a winning run in Melbourne.
Iga Swiatek has dismissed suggestions the career slam is driving her Australian Open campaign this year, with the world number two saying on Friday that she tries to block out outside noise and focus only on "grinding match by match".
