Serena Williams beaten by Emma Raducanu in Western & Southern Open

MASON, Ohio − Twenty-three-time Major champion Serena Williams took the court tonight at her 10th Western & Southern Open against Emma Raducanu, the 19-year-old, No. 1 ranked British player in the women's tennis world right now.

They faced off for what would be one of Williams' last matches of her tennis career, with her retirement set on the calendar following the U.S. Open scheduled for Aug. 29-Sept. 11.

Raducanu defeated Williams in straight sets, just under an an hour and a half of play, in front of a sold out crowd on Center Court. This is the first time in 10 Western & Southern appearances that Williams has lost in her first main draw match. Williams is a two-time winner of the Western & Southern Open.

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"It feels pretty amazing, to be honest. I can't believe I just played Serena Williams," Raducanu said in a press conference following her win. "I think I'm really fortunate to have been able to do it and for our paths to have crossed when there's such a big gap (in our careers)."

Raducanu started off the night strong, finding a solid and early 4-1 lead during the first set. Williams was warmed up at that point and closed the gap, 5-4, but Raducanu triumphed and took the set, 6-4. She came into the second set just as strong, hopping 4-0 in no time, and closing it off 6-0 with the roar of the crowd.

"I think a big part of the match today was definitely the mental side, to not be intimidated by all her achievements, and that is what I was focusing the most on, just being really, really present and thinking of my game and what I needed to do," Raducanu said. "Physically, I think I held out pretty well. There were some longer exchanges and I held up well in them. I scraped, I made her work, and sometimes I won the point when it mattered, or she did. I feel good right now."

Raducanu will advance to play another Grand Slam champion in Victoria Azarenka in the Round of 32 tomorrow. She said it's a quick turnaround, joking she hasn't even had time to shower yet, but she's ready for it.

This article originally appeared on Cincinnati Enquirer: Emma Raducanu defeats Serena Williams at Western & Southern Open