MELBOURNE — Emma Raducanu was handed the worst grand slam defeat of her career on Saturday, dumped out of the Australian Open by Iga Swiatek 6-1, 6-0.

It was a year of frequent coaching changes for Raducanu. Having won the U.S. Open with Andrew Richardson, she replaced him with Torben Beltz just two months after winning the title. By April 2022, Beltz was out and Dimitry Tursunov, who had worked with Annett Kontaveit while she reached No. 2 in the world, was in.

The only women’s match featuring Grand Slam singles champions in the third round at the Australian Open turned out to be an overpowering win by Iga Swiatek over Emma Raducanu