It was the Latvian's first title on clay since her 2017 French Open Grand Slam victory.
Swiatek hit 33 unforced errors in a dismal 6-4 6-2 defeat.
'I think this tournament was the first tournament this year that I went in trying to win for myself, and I think that was the difference in my mentality'
Russian seventh seed Daniil Medvedev, the 2023 Miami champion who arrived this year fresh off a run to the Indian Wells semi-finals, crashed out at the first hurdle as he fell 6-2, 6-3 to Spaniard Jaume Munar.
Swiatek made the most of Kasatkina's string of unforced errors, peppering court Philippe Chatrier with winners.
Ash Barty has become the first local woman to reach the final of an Australian Open in 42 years.
Swiatek is on a remarkable 34-match winning streak On the other side, Gauff has developed into a solid claycourt player
The free-swinging Monfils broke Draper's serve in the fourth set as the clock moved past 11pm local time and saved five break points in an epic seventh game to move 5-2 ahead.
Madison Keys is the second-oldest woman to claim her first Australian Open singles title in the Open era.
Simona Halep questioned the "big difference" in how doping cases are treated after world number two Iga Swiatek was handed a one-month drugs ban
Iga Swiatek's maiden triumph at the US Open extended her lead to almost twice as many points as the second-ranked Ons Jabeur
Swiatek's last defeat on clay came in the WTA 1000 event in Madrid against Australian Barty, who elected not to defend her 2019 French Open title last year due to the COVID-19 pandemic.
Pole says she feels much better prepared to handle the pressure of her latest career milestone.
On the anniversary of the day he first walked on to the Roland Garros court 20 years ago, Rafael Nadal returned as a hero to be celebrated by a crowd that has always embraced him as one of their own.
Zverev cruised past home favorite Roberto Bautista Agut 6-2, 6-2, while Sabalenka triumphed over qualifier Anna Blinkova 6-3, 6-4.
Images from Day 12 of the French Open, at Roland Garros, in Paris.
The Dutchman collapsed on the court after converting his sixth match-point to end an absorbing three hour, seven minute affair under sunny skies on Stadium One court.
Sinner's ban began on February 9 and will end on May 4 while he can return to training on April 13. The French Open main draw is scheduled to begin on May 25.
Paula Badosa overcame a slow start to take down Belarusian top seed Aryna Sabalenka after Maria Sakkari continued her dominance of Iga Swiatek in the round-robin stage of the WTA Finals in Guadalajara, Mexico on Thursday.
A summary of Thursday's action at the US Open.
Novak Djokovic expressed his frustration at being "kept in the dark" about world number one Jannik Sinner's doping case, saying in Brisbane on Sunday that it was not a good look for tennis.
'Neither I nor members of my team have symptoms of coronavirus. We carry out tests regularly. We will quarantine ourselves in accordance with current procedures'
Images from Day 7 of the 2022 French Open at Roland Garros in Paris on Saturday.
Images from Day 3 of the 2023 French Open at Roland Garros in Paris on Tuesday.
Images from Day 10 of the 2022 Australian Open in Melbourne on Wednesday.
Naomi Osaka has parted ways with coach Wim Fissette after four years together across two stints, the 26-year-old announced late on Friday.
The 23-year-old Pole, who also won the Roland Garros title in 2020, said she was fully aware that perfectionism was a double-edged sword.
Poland's red-hot world number one Iga Swiatek did not drop a game in her Saturday singles match against Romania's Andreea Prisacariu, sending Poland through to November's Billie Jean King Cup finals in decisive fashion.
Images from Day 11 of the 2021 French Open at Roland Garros in Paris on Wednesday.
IMAGES from Day 2 of the Wimbledon Championships from the All England Lawn Tennis and Croquet Club, London, on Tuesday.
Zverev had surgery on torn ligaments in his right ankle this month after he was forced to retire from his French Open semi-final against Rafael Nadal.
Sinner, who retained his Australian Open title last month, failed two drug tests in March 2024 but was allowed to keep competing while he appealed his case.
Images from Day 5 of the 2023 Australian Open at Melbourne Park on Friday.
The buzz around talented teenagers Mirra Andreeva and Joao Fonseca continued at Indian Wells on Wednesday.
A summary of Monday's action at the US Open.
IMAGES from Day 4 of the Wimbledon Champions at the All England Lawn Tennis and Croquet Club, London, on Thursday
Images from Day 9 of the 2021 French Open at Roland Garros in Paris on Monday.
Russian teenage sensation Mirra Andreeva continued her giant-slaying exploits at the Dubai Tennis Championships by upsetting Kazakhstani sixth seed Elena Rybakina 6-4, 4-6, 6-3 in the semi-finals on Friday.
Aryna Sabalenka will battle American 19th seed Madison Keys in the final on Saturday looking to become the first woman since Martina Hingis from 1997-99 to win the Australian Open title three times in a row.
A summary of Wednesday's action at the US Open.
