Angelique Kerber won the US Open on Saturday, marking her rise to world number one with a gritty victory over Karolina Pliskova for her second Grand Slam title of the year.
Germany's Kerber, the second seed, rallied from a break down in the third set to beat the hard-hitting 10th-seeded Czech 6-3, 4-6, 6-4.
She added the US Open crown to the Australian Open title she claimed in January, breaking Pliskova at love to cap the triumph.
"Amazing to win a second Grand Slam in one year," Kerber said. "It's the best year of my career.
"It all started for me here in New York five years ago when I reached the semi-finals and now I am here with the trophy," she added. "It's incredible."
The 28-year-old left-hander, who beat Serena Williams in the final at Melbourne and lost to the US great in the Wimbledon final, will officially rise to world number one on Monday.
But she was assured of that spot when Pliskova toppled Williams in the semi-finals.