The Romanian-born Canadian, 15th in the world, won the tournament for the first time against the 37-year-old American (6-3, 7-5).
There will be no record of victories in the US Open for Serena Williams. And this defeat, for its tenth final of the tournament, even has a bitter taste. The American was drily beaten (6-3, 7-5) by a tornado twice as young as her: Bianca Andreescu, 15e World.
The sensation of this season wins its first US Open. Bianca Andreescu had not passed the qualifications of the US Open last year. She broke out on the circuit this year by winning three titles (Indian Wells, Toronto and the US Open). It will climb to 5e World rank officially Monday.
"I worked very, very hard and this year it's a dream come true. And tonight, beat Serena who is a legend of this sport, it's incredible "said the first Canadian ever to win a Grand Slam tournament.
"Bianca played an incredible match"
"Bianca played an incredible game. Congratulations. If someone other than me, and Venus (his older sister) aside, must win this tournament, I'm glad it's Bianca ", reacted on his side Serena Williams.
The American has lost a fourth straight Grand Slam final after Wimbledon and the US Open 2018 and again Wimbledon and the US Open 2019, and remains stuck at 23 major titles, still at record length from Margaret Court.
Williams, who turns 38 on September 26, was once again very nervous, giving up the first game of the game by committing two double faults in a row, and then offering the set on a new double fault.
In the second run, Andreescu led 5-1 and earned a first match point, but Williams then set a 14-point run over 17 to finally get back to 5-5. Much to the public's delight, the game then seemed to turn. But Andreescu regained consciousness and concluded the match by winning the next two games.