Halep had clinched the French Open in 2018 after defeating American Sloane Stephens in the final.
Coco Gauff, who shared an emotional on-court interview with Osaka after falling to her at the 2019 US Open, echoed Stephens's comments.
The popular Romanian, who had lost three major finals before Saturday, showed signs of nerves at first but recovered to outclass her 10th-seeded opponent.
IMAGES from Day 10 of the French Open at Roland Garros in Paris on Tuesday.
Elina Svitolina stretched every sinew in a brilliant display of defensive tennis to register the biggest win of her career when she rallied for a 3-6, 6-2, 6-2 triumph over Sloane Stephens in an enthralling WTA Finals title decider on Sunday.
Sloane Stephens watched January's Australian Open from her couch, a large cast on her left foot rendering her immobile and raising questions in her mind about her ability to bounce back from the injury.
Frances Tiafoe, Taylor Fritz, Tommy Paul and Coco Gauff all advanced to the third round of the US Open on Wednesday to keep home hopes alive.
Images from Day 8 of the 2023 French Open at Roland Garros in Paris on Sunday.
Unseeded Sloane Stephens crushed fellow-American Madison Keys 6-3, 6-0 to win her maiden Grand Slam, in the US Open final, in New York on Friday.
Petra Kvitova, who missed part of the 2017 season after a home invasion left her with a badly cut left hand, continues her remarkable comeback when she faces American Venus Williams.
Belinda Bencic of Switzerland and Danielle Collins were among those to win their first-round matches at the Adelaide International
Jo Konta cantered into the semi-finals of the French Open on Tuesday
Venus Williams rejected the suggestion she might be content to serve as an inspiration to younger players after her 6-1, 0-6, 7-5 defeat to fellow American Sloane Stephens in the semi-finals.
Agnieszka Radwanska continued her pre-Wimbledon tune-up by reaching the final of Eastbourne grasscourt tournament with a 6-1, 6-7(3), 6-2 win over America's Sloane Stephens on Friday.
Serena Williams has defeated her compatriot in four straight matches since a defeat in the quarter-finals of the 2013 Australian Open.
American Sloane Stephens kept intact her streak of never having lost a final as she defeated Latvia's Jelena Ostapenko 7-6(5), 6-1 to claim the Miami Open title on Saturday.
Sloane Stephens's US Open win could be the first of many Grand Slam titles for the young American, but there is a question mark on her ambitions, according to former world number one Mats Wilander.
World No. 1 Novak Djokovic is determined to give it his best shot in Paris to win the elusive Olympic gold medal.
Stephens sees success of Black women inspiring new generation.
Sloane Stephens said she is ready to turn the page on a disappointing 2019 and shift her focus to climbing the world tennis rankings to qualify for next year's Tokyo Olympics.
A summary of Thursday's action at the US Open.
'There are some challenges and combining parenting at home and teaching the kids at home and still going to practice and things like that, so it was challenging but at the same time you get through that together.'
Andy Murray and Emma Raducanu clinched hard-fought wins in their first round matches at Indian Wells.
Rafael Nadal reclaimed top spot in the men's ATP rankings on Monday
Serena Williams will return to the court for the first time since the start of the coronavirus pandemic when she competes at the inaugural edition of the Top Seed Open in Lexington, Kentucky beginning August 10, the WTA said on Thursday.
"Sloane is truly one of my favourite people and to get to play her was really special," said Keys.
Venus Williams will take on compatriot Sloane Stephens in one semi-final before her fellow Americans Madison Keys battles it out with CoCo Vandeweghe in the other in all-American semi-final in the women's singles at the US Open.
Osaka battled on gamely before retiring while trailing Kaia Kanepi 7-6(4), 3-0.
Medvedev moved a step closer to a potential semi-final showdown with Novak Djokovic at the Australian Open warm-up event.
A round-up of all the tennis action from around the globe.
Images from the French Open women's semi-final matches played at Roland Garros on Thursday
Top-seeded Elina Svitolina of Ukraine, wearing her national colors of blue and yellow, won on "a special night for me," beating Russia's Anastasia Potapova 6-2, 6-1 on Tuesday in the first round of the Abierto GNP Seguros in Monterrey, Mexico.
While the stakes could not be higher on Thursday, Sloane Stephens said there will be no "weirdness" in the locker room.
Holger Rune crashed out to Yoshihito Nishioka in the ATP 250 Adelaide International 1 first round.
Sloane Stephens has denied she was celebrating the shock fourth round exit of World No 1 Serena Williams and said she felt the television footage was intrusive.
'It takes its toll on bigger guys. Whenever I have seen Juan maybe struggle in the heat or on TV and it looks like he's gassed out there, I can always relate'
Serbian Dusan Lajovic beat Andy Murray at the Miami Open on Wednesday, sending the Briton packing in the first round with his first hardcourt win of the season.
Three-time US Open champion Djokovic, who comes into the tournament having won his fifth Wimbledon title, is followed in the seedings by 2017 winner Rafael Nadal.
The event includes several safety measures designed to mitigate the potential spread of coronavirus, including COVID-19 testing for participants and regular temperature checks
Stephens used her powerful game to the full in the first set, hitting winners almost at will, but Halep then stepped up a gear and went on to win 3-6, 6-4 6-1.