"Today was the test of fire, no discomfort, feeling spectacular... from here, we'll be getting better."
Defending Madrid Open champions Carlos Alcaraz and Aryna Sabalenka both triumphed in their opening clashes in the Spanish capital on Friday to reach the third round.
Top seed Swiatek, the 2022 and 2023 champion at the German clay-court tournament, saw off former US Open champion Raducanu 7-6 (7/2), 6-3.
"Konstantin's death is an unthinkable tragedy," Sabalenka said in a statement released by her agent.
Sabalenka's partner, Belarusian former NHL ice hockey player Konstantin Koltsov, 42, died late Monday after jumping from the balcony of a room in an upmarket resort in Miami, police said.
Konstantin Koltsov, the Belarusian former pro ice hockey player and boyfriend of tennis player Aryna Sabalenka, has died at the age of 42, Russian club Salavat Yulaev said in a statement on Tuesday.
An authoritative Aryna Sabalenka blew China's Zheng Qinwen off court on Saturday to successfully defend her Australian Open title -- the first woman to do so in more than a decade.
The Belarusian world number two has yet to drop a set in Melbourne this year
Aryna Sabalenka has blown all-comers off court on her march to the final of the Australian Open and China's Zheng Qinwen will need to produce something extraordinary to deprive her of back-to-back titles on Rod Laver Arena on Saturday.
Fourth seed Gauff, attempting to become the first woman to back up a US Open title with a Grand Slam win in Australia since Naomi Osaka in 2018-19, has been almost as impressive.
Sabalenka ruthlessly handed 28th seed Tsurenko the dreaded "double bagel" in 52 minutes.
Elena Rybakina will head to the Australian Open full of confidence after demolishing world number two Aryna Sabalenka in the Brisbane International final on Sunday.
World number one Aryna Sabalenka sailed into the second round of the China Open with an imperious 6-1, 6-2 defeat of Sofia Kenin on Sunday.
Newly crowned world number one Aryna Sabalenka said Friday she is "super motivated" to finish the year in top spot as she prepares to compete in the China Open in Beijing.
Aryna Sabalenka fought back from the brink of defeat to overcome American 17th seed Madison Keys in a third-set tie-break and line up a US Open final against home favourite Coco Gauff.
New York has been sweltering in a heatwave this week, with high humidity and temperatures at Flushing Meadows on Wednesday hitting 35 degrees Celsius (95 Fahrenheit)
Alcaraz, looking to become the first man to successfully defend the title since Roger Federer in 2008, polished off British 26th seed Dan Evans 6-2, 6-3, 4-6, 6-3 in 3hr 11min
Women's tennis chiefs on Monday pleaded with spectators to show "understanding and respect" when Ukraine players refuse to shake hands with Russian and Belarusian opponents in protest at the ongoing war in their country.
Second seed Aryna Sabalenka recovered from a set down to beat France's Varvara Gracheva 2-6, 7-5, 6-2 and reach the last 32 at Wimbledon on Friday.