Unseeded American Alycia Parks secured a stunning 7-6 (7), 7-5 upset win over WTA Finals champion Caroline Garcia in the Open Métropole de Lyon final to clinch her first career title on Sunday.
"I think France has a special part in my heart right now," Parks said. "I'll be back next year."
The 22-year-old Parks, who is ranked 79th, had 15 aces and saved all four break points against the top-seeded Garcia.
Parks secured the only break of a tight contest to win the match.
The fifth-ranked Garcia, a U.S. Open semifinalist last year, was seeking a 12th career title.
"Congrats on a great tournament," Garcia told Parks. "If you keep playing like this for sure you're going to keep going up [the rankings]."
Parks has a career-best ranking of 75th.
The 29-year-old Garcia, who grew up in Lyon, took time to thank her home crowd -- this time in French.
"It means a lot to play here, thanks for being here," Garcia said. "You supported me from the first point to the last. Thanks for all your encouragement."