Petra Kvitova beat fellow former Wimbledon champion Garbine Muguruza 6-2 6-1 to win her second Qatar Open title.
Czech Kvitova, the world number 10 and fourth seed, triumphed in a repeat of the 2018 final in Doha.
Spaniard Muguruza, 27, had the benefit of a full rest day on Friday after the withdrawal of semi-final opponent Victoria Azarenka with a back injury.
But Kvitova, 30, triumphed in only 66 minutes to secure her first title since April 2019 and a 28th overall.
Kvitova, who has beaten Muguruza in their past five meetings, said: "It's been a great run.
"I'm sorry for the second time. I hope we can meet somewhere else."
World number 16 Muguruza said: "For a second time she took the title away from me, but I can't wait to come back next year."
Kvitova's previous tour title was in Stuttgart in April 2019.
The Czech player's run to the title came after a slow start to 2021 including a second-round exit at the hands of Sorana Cirstea at the Australian Open.
Muguruza drops to 7-7 in finals and has lost three in a row with last year's loss to Sofia Kenin in the Australian Open final and last month's loss to Ash Barty at the Yarra Valley Classic.