Iga Swiatek celebrates with the trophy after winning the single's final match against Aryna Sabalenka (not in the picture) in Stuttgart, Germany, on Sunday. AFP
The 20-year-old picked up her 23rd straight victory as she added Stuttgart to title wins in Doha, Indian Wells and Miami.
Swiatek was relentless, breaking Sabalenka's serve twice in the opening set, then greeting every point won with a clenched fist of celebration to seal a 6-2, 6-2 win.
"It was a tough match, we fought for every game, hopefully there will be many more to come," said Swiatek.
She thanked her team for helping her recover in the short time between her semi-final win over Liudmila Samsonova, which lasted just over three hours.
"Thank you for giving me life again," she said. "The atmosphere was amazing and it was great to see all the Polish flags, it's such a huge support for us."
Iga Swiatek celebrates with the trophy and the winner's car after winning the single's final match against Aryna Sabalenka in Stuttgart, Germany. AFP
Swiatek threw her racquet in the air with joy and held up four fingers for each of her titles in 2022 after breaking Sabalenka's serve in the final game to convert her third championship point.
Her debut at the clay-court Stuttgart tournament culminated with a commanding performance as she needed just 85 minutes to dispatch Sabalenka, ranked fourth in the world.
Swiatek was the first Polish player to win a Grand Slam singles title at the 2020 French Open.
She now owns seven career titles.
Her tally of 23 straight victories sees Swiatek match Naomi Osaka's winning streak from 2020-21 as she approaches Venus William's record of 35 triumphs on the WTA tour.
Since losing her first WTA final as a 17-year-old in 2019, Swiatek has since won seven finals in a row.
She is also the first player to chalk up 30 match wins this season.
Speaking about her plans to open a tennis academy in Dubai, she added: "My new project is about opening a tennis academy here in Dubai for local Emirati tennis player to become a champion and one day have the chance to play in Wimbledon and elsewhere..."
The 26-year-old Haddad Maia beat a top-ranked player for the first time to become the first Brazilian woman to advance to the quarterfinal of a WTA 1000 tournament.
The Polish 20-year-old has now become only the fourth — and youngest — player to win the "Sunshine Double" of Indian Wells and Miami in the same year following Steffi Graf, Kim Cljisters and Victoria Azarenka.
Sheikh Saeed Bin Maktoum Bin Juma Al Maktoum, President of the UAE Padel Association, and Arsham Moradi reached the quarter-finals of the padel competition at the 10 NAS Sports Tournament on Sunday.
England's Nat Sciver-Brunt hit an unbeaten half-century to steer Mumbai Indians to a tense seven-wicket victory over Delhi Capitals in the final of the inaugural Women's Premier League on Sunday.
Roberto Rodriguez and Martin Nochese defeated Jonathan Green and Colin Marshall, while Javier Garcia Lopez and Sergio Icardo Alcorisa got the walkover to reach quarter-finals of the 100-point classification category of the Padel Championship at the 10th edition of the NAS Sports Tournament.