Caroline Garcia beat new world No 1 Simona Halep yesterday to claim the China Open.
The 23-year-old, fresh from winning the Wuhan Open last weekend, held her nerve for a thrilling 6-4 7-6 (7/3) victory.
Halep, who will top the rankings for the first time when they come out on Monday, required treatment on a leg injury early in the second set.
But in a pivotal seventh game of the second set, she wasted no fewer than nine break points before Garcia eventually held serve.
Garcia, of France, went on to take the tie-break before dropping to her knees in celebration of a first career win over her Romanian opponent.
The victory also puts Garcia ahead of Britain’s Johanna Konta in the race to reach the WTA Finals in Singapore.
Konta must now reach the final of the Kremlin Cup, which starts on October 16, to qualify.
Meanwhile, in the men’s singles, Rafael Nadal demolished Nick Kyrgios to win his sixth title of the season.
The Spaniard won nine games in a row on his way to a comprehensive 6-2 6-1 victory to reclaim the trophy he last won in 2005.
It was another Jekyll and Hyde performance from the unpredictable Kyrgios, who battled bravely to fend off five break points in his opening service game.
However, having then been angered by a line call, the Australian proceeded to complain to the umpire at two changes of end, which eventually cost him a penalty point at the start of the eighth game.
Nadal duly clinched his second break to take the first set, and despite a spirited response from Kyrgios there was no stopping the 31-year-old.