Sindhu has been off colour this year, struggling for form.
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.
Norway's Casper Ruud, the French Open runner-up in 2022 and 2023, crashed out of the tournament in the second round on Wednesday after losing 2-6, 6-4, 6-1, 6-0 to unseeded Nuno Borges of Portugal.
World No. 1 Jannik Sinner stayed cool to reach the second round of Wimbledon while several of his fellow seeds including Italian compatriot Lorenzo Musetti crashed and burned on a sizzling Tuesday.
...And Alcaraz continues hat-trick quest
Olympic gold medallist Zheng, making her WTA Finals debut, got off to a great start against the Czech eight seed, with an early break of serve to take a 3-0 lead.
Aryna Sabalenka's return to top spot in the WTA rankings after leapfrogging Iga Swiatek has set up a thrilling end to the season, with next month's WTA Finals in Saudi Arabia likely to prove decisive in the race to end the year as world number one.
Mumba captain and World No. 12 Bernadette Szocs emerged as the star of the night, ending Sreeja Akula's unbeaten run with a 2-1 win.
Kidambi Srikanth entered the semi-finals of Malaysia Masters with a hard-fought three-game win over Toma Junior Popov of France.
Sinner plays down split with trainer and physio ahead of Wimbledon
'I really want to win': Confident Alcaraz targets rare Wimbledon three-peat
Vondrousova beats qualifier Wang to win Berlin Open
Sinner faces defending champ Alcaraz in hotly anticipated French Open final
Sindhu, Prannoy advance to second round of Singapore Open
Indian shuttler Kidambi Srikanth capped a remarkable campaign with a runner-up finish at the Malaysia Masters Super in Kuala Lumpur on Sunday, going down in straight games to China's world No. 4 Li Shi Feng in the men's singles final.
Coco Gauff ended local heroine Lois Boisson's dream run at the French Open with a ruthless 6-1, 6-2 victory on Thursday to set up a final clash with top seed Aryna Sabalenka.
'We were the best team in Asia at one point. Today, we are barely in the reckoning for the Davis Cup.' 'Players now, especially this decade, lack perseverance.'
FIDE, which has listed the venue for all its global events, has not yet announced the venue for the World Cup.
The French Open is elevating its total purse at Roland Garros to about $63.7 million, an increase of 5.21 percent compared to last year.
Boisson goes from crowdfunding to bumper pay day in Paris
Reigning world champion D Gukesh continued to turn adversity into opportunity as he wriggled out of a virtually intractable position to beat compatriot Arjun Erigaisi for the first time ever in a classical game and jump to sole second position after round 7 of the Norway Chess.
Nagal's ranking nosedives to 233, still-strong Bopanna out of top-50 for first time in 15 years
Alcaraz resists red-hot Rublev to reach Wimbledon quarterfinals
It's a good sign, best is yet to come: Satwik-Chirag on semifinal finish at Singapore Open
Reigning World champion Dommaraju Gukesh's roller-coaster ride continues. The Indian Grandmaster suffered defeat in an Armageddon tie-break and slipped to tied-fifth place, while Arjun Erigaisi upset American world No.2 Hikaru Nakamura to maintain fourth position in the Norway Chess tournament.
'Most of my birthdays I end up losing the game, so glad it did not repeat in the classical. When I was playing, I felt fine, but when I was losing, I was like, 'ok, not again'.
India's frustrating FIH Women's Pro League campaign continued with the Salima Tete-led side suffering their third successive loss, a 1-4 defeat to world No.2 side Argentina
Sabalenka spent eight weeks at the summit last year before Swiatek overtook her with a victory at the season-ending WTA Finals and the Belarusian hopes for a longer stay as 'N1'.
Rising shuttlers Ayush Shetty and Unnati Hooda's impressive run at the US $240,000 BWF Taipei Open Super 300 ended in the men's and women's singles semi-finals respectively, bringing the curtain down on India's campaign in Taipei on Saturday.
Seventeen-year-old Unnati, champion at the 2022 Odisha Masters and 2023 Abu Dhabi Masters, was no match for world No. 2 and top seed Pornpawee Chochuwong, going down 14-21, 11-21 in just 39 minutes.
Two-time Olympic medallist PV Sindhu faltered in the deciding game to lose to World No. 8 Pornpawee Chochuwong of Thailand in the women's singles second round of the Indonesia Open Super 1000 badminton tournament in Jakarta on Thursday.
The recurve events saw a mixed day for India.
Together, the two young stars have now claimed seven out of the last eight Grand Slam titles.
Sen fell to Ireland's Nhat Nguyen in a tense three-game battle, losing 18-21, 21-9, 17-21 in a men's singles match that lasted one hour and 20 minutes.
After successfully defending her Australian Open trophy in January, Aryna Sabalenka won the US Open crown in September for her third Grand Slam title.
Snehit Suravajjula pulled off one of the biggest upsets of Ultimate Table Tennis (UTT) by sweeping past World No. 26 Aruna Quadri, helping Ahmedabad SG Pipers edge Kolkata ThunderBlades 8-7 in Ahmedabad on Tuesday.
The following are five contenders for the men's title at Wimbledon, which begins on Monday.
Five-time World champion Magnus Carlsen of Norway got the better of D Gukesh in the opening round of Norway Chess.
Factbox on Spanish second seed Carlos Alcaraz, who beat Italian world number one Jannik Sinner 4-6, 6-7(4), 6-4, 7-6(3), 7-6(10-2) in the French Open final on Sunday to win his fifth Grand Slam title.