Qualifier Caroline Garcia completed a dream week on Sunday at the ATP and WTA Cincinnati Masters with a 6-2, 6-4 title defeat of Petra Kvitova.
The French winner claimed her third Masters-level title - her 10th overall - after winning Wuhan and Beijing in a Chinese double five years ago.
Garcia followed the extraordinary template of Emma Raducanu, who won the US Open 11 months ago as a qualifier.
Number 35 Garcia, who fell on her back after clinching victory, maintained her lead on the Tour with a 27th match victory since June.
"Pure joy, just happiness," she said. "Every single win is very important. It's always very hard to describe.
"It doesn't happen so often and you have to really enjoy it. I'm grateful for this great week of tennis, and to win another title, it's very special."
She said expectations were low when she arrived for the qualification rounds.
"I was not that confident when I arrived, qualies were tough matches. I was really happy to be through and play in the main draw," she said.
"Every match was a new challenge. I had to be focused on myself, on my game, what can I do, how I can be more aggressive, how can I improve.
"Just one day at a time I ended up here today on the final and now lifting the trophy."
Kvitova, a double Wimbledon champion, was playing the 40th final of her career and looking for a 30th title.
Garcia set up match point against an opponent who needed off-court medical treatment by sending over her 11th ace of the afternoon.
The end came on the next point as Kvitova returned long.
"It was definitely not the result I wanted, but if someone had told me I would be in the final I would be very happy," said Kvitova.
"I have to see the positive things: I could have been out in my first match, I have to be proud of the 40th final of my career.
"I didn't win the bigger trophy, but she really played very, very well.
"Caroline just, when she was down, she just served aces. She deserved to win."
She added: "The big question right now is with my health (fitness), how everything will be in a couple of days, but still having a (practice) week before US Open will help me, I hope."
Garcia repeated a victory over Kvitova from here seven years ago; she upset three top-10 players this week on her run to the trophy.
Garcia ran her season ace total to 286 with the victory in 96 minutes.
She is the fourth French player since 1980 with 10 or more WTA-level titles after Amelie Mauresmo (25), Mary Pierce (18) and Julie Halard (12).
Garcia saved all eight break points she faced while breaking Kvitova three times.
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