Aryna Sabalenka won the U.S. Open and her third Grand Slam crown with a thrilling victory over a gallant Jessica Pegula in a rollercoaster final on Saturday.

World number two Sabalenka triumphed 7-5, 7-5 to add the New York title to her back-to-back Australian Open victories.

Pegula went down fighting, however, recovering from 0-3 and break point down to lead 5-3 in the second set before Sabalenka came through.