Garbiñe Muguruza, 28, has become the first Spaniard to win the WTA tournament in Guadalajara, Mexico following her victory against Estonian Anett Kontaveit in the finals on 17 November.
Ranked world number one in 2017, Muguruza once again won an important tournament following her victories at Roland Garros (2016) and Wimbledon (2017).
The victory in Mexico marked the tenth title of her career. She beat Anett Kontaveit, 25, ranked eighth in the world, 6-3 and 7-5 in 1 hour and 38 minutes.
The WTA statistics prior to the match gave Anett Kontaveit a 54% chance of victory.
In addition to being crowned champion, the athlete won almost 4 million euros and will finish the season ranked third in the world (she was previously fifth).
The match had few high-quality rallies, but the nerves of the two players were palpable.
Both knew that they were facing a great opportunity to secure one of the most important trophies of their career.
Garbiñe was more calm and composed than her rival. She won the first set after breaking Kontaveit's service in the third game.
Though she lost her serve, she did not falter in the seventh game, nor in the ninth, and won the first set in 42 minutes.
In the second set, it looked likely that the final would go to three sets, but Garbiñe knew that the title depended on her being calm and waiting for her opponent to make mistakes.
She won the twelfth game 40-0 to win the set 7-5 and seal the tournament title.
"This week you have been too good for me," Anett Kontaveit told the champion at the trophy ceremony.
"It's incredible what I've experienced. Mexico excites me," said the victorious Garbiñe Muguruza amid applause from the public.