The win extends the Pole’s winning streak to 10 matches (12-2 on clay for the season) and was her 36th win in 40 matches on tour this year.
Swiatek, a four-time Grand Slam champion, will face the winner of the match between American Coco Gauff, the No 3 seed, and Chinese Qinwen Zheng, the No 7 seed, for a place in the final. It will be her third semi-final in Rome and her 16h career semi-final at the WTA 1000 level.
Earlier in the tournament, the 22-year-old Pole defeated American qualifier Bernarda Pera (6-0, 6-2), Kazakh Yulia Putintseva (6-3, 6-4) and German Angelique Kerber (7-5, 6-3).
The win also marked her 75th career win on clay – taking her career win-loss record on the surface to 75-10.
Keys, ranked No 16, won against Colombian Camila Osorio (6-0, 4-6, 6-3), Brazilian Beatriz Haddad Maia, the No 12 seed (6-4, 4-6, 6-3) and Romanian Sorana Cirstea, the No 28 seed (6-2, 6-1) in the previous rounds of the Rome tournament.
Rome WTA 1000, other quarter-final results (Foro Italico, clay, USD 5,509,771):
American tennis star Ben Shelton called out the TV interviewers at the Australian Open on Tuesday following his quarterfinal victory, saying that he believes
American tennis star Ben Shelton lashed out at 'disrespectful' comments from broadcasters and interviewers working at the Australian Open in an unprompted rant
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