Relief was at hand, however, with a cool change blowing over the city and the temperature expected to fall back below 30 by the evening.
Garbine Muguruza claimed a 6-4, 7-6(3), 7-5 win over Johanna Konta
Osaka battled on gamely before retiring while trailing Kaia Kanepi 7-6(4), 3-0.
Images from Monday's action at the Australian Open.
The hard court, outdoor competition in Lexington, Kentucky, marked the WTA's first tournament in the United States since the coronavirus outbreak forced almost all sport into a long break earlier this year.
Images from Day 8 of the 2022 Australian Open at Melbourne Park on Monday.
Sixth seed Elise Mertens fell to Kaia Kanepi 0-6, 6-0, 7-5 and seventh seed Julia Goerges lost to American Taylor Townsend 6-4, 7-6(0).
Halep, who held the WTA year-end top ranking in 2017 and 2018, has not lost a set in her first week at Melbourne Park and was aggressive against Putintseva from the outset.
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.
Players complained about the conditions, with France's Alize Cornet stating extreme the heat policy could be endangering the safety of players, this, after she suffered dizzy spells during her third round match against Elise Mertens on Friday.
IMAGES from Day 6 of the French Open, at Roland Garros, on Friday.
Images from the US Open women's singles second round matches, at Flushing Meadows, New York, on Wednesday.
Johnson to meet Medvedev in Winston-Salem final
A summary of Friday play at the French Open.
Naomi Osaka pulled out of the semi-finals of the Western & Southern Open tennis tournament on Wednesday in New York City, in protest at racial injustice. Her decision follows protests over the police shooting of Jacob Blake, a Black man, in the city of Kenosha, Wisconsin, on Sunday.
Images from Day 7 of the 2024 French Open.
Alison Riske-Amritraj will be eager to build on that in the land of her in-laws.
Venus Williams broke down in tears during her post-match news conference at Wimbledon on Monday when asked about a recent motoring incident she was involved in, which led to the death of a 78 year old Florida man.
IMAGES from Day 1 of the Wimbledon Championships, at the All England Lawn Tennis and Croquet Club, London, on Monday.
Gauff survives scare, Osaka advances
Defending champion Naomi Osaka of Japan was upset 7-5, 6-4 by Belinda Bencic in the fourth round at the US Open on Monday as the Swiss reached the quarter-finals for the second time.
Nadal meets the 'new Nick' Kyrgios in fourth-round blockbuster
Nadal braced for tough Cilic test in Melbourne showdown
American Jennifer Brady defeated compatriot Coco Gauff 6-2, 6-4 at the Top Seed Open on Saturday, earning a spot in her first WTA final.
Nadal, playing his first match since losing to Roger Federer in the Wimbledon semi-finals, fell behind 5-2 in the tiebreak before roaring back to prevail in his first career meeting with world number 53 Evans.
Nadal committed 30 unforced errors to Schwartzman's 17 and had his serve broken five times.
World number one Naomi Osaka was beaten in her opening match at the Dubai Duty Free Tennis Championships on Tuesday, losing to France's Kristina Mladenovic 6-3, 6-3 on her return to competitive action after winning last month's Australian Open.
The 25-year-old Dzumhur recovered from a poor start to beat the Briton 1-6, 7-5, 6-3 and will bid to become the Balkan nation's first Tour winner in Saturday's title-decider against Spain's Roberto Bautista Agut.
Serena Williams was forced to dig deep to secure a 4-6, 6-3, 6-2 US Open quarter-final victory over unseeded Bulgarian Tsvetana Pironkova on Wednesday, keeping alive her latest bid for a record-tying 24th Grand Slam singles title.
Key facts and records of American Serena Williams and Canada's Bianca Andreescu
Images from Day 8 of the 2023 French Open at Roland Garros in Paris on Sunday.
Milos Raonic overcame third seed Grigor Dimitrov 7-5, 3-6, 6-3 to reach the third round at the Madrid Open on Tuesday and set up an all-Canadian clash with teenager Denis Shapovalov.
Former US Open champion Del Potro fired down 11 aces and did not face a break point during the one hour, 33 minutes match.
Former Wimbledon runner-up Eugenie Bouchard's slide down the tennis rankings had nothing to do with any eating disorder, the Canadian said on Thursday.
Former champion Stan Wawrinka battled past Russian fourth seed Daniil Medvedev in five sets to reach the Australian Open quarter-finals with a 6-2, 2-6, 4-6, 7-6(2), 6-2 victory. Fifth seed Dominic Thiem kept his flawless record against Gael Monfils intact with a trouble-free 6-2, 6-4, 6-4 victory on Monday to reach his maiden Australian Open quarter-final.
The manner of her defeat inevitably led to speculation that the 37-year-old may have had a physical problem that stopped her from competing with the effectiveness she had shown in earlier rounds.
Halep finds groove to reach Prague semi-finals.
Defending champion Donna Vekic, of Croatia, earned a hard-fought win over British wild card Gabriella Taylor 7-5, 5-7, 7-6(3).
Images from the 2022 Wimbledon Championships at the All England Club in London on Sunday.
Serena, a six-times champion in New York who is seeded 17th, will start her campaign against Polish world number 60 Magda Linette and could face Venus in the third round before a possible fourth-round showdown with Romanian top seed Halep.
