3 seed Lorenzo Sonego 4-6, 6-4, 7-6 over more than 2 1/2 hours in a men’s final in which each player collected the same number of total points, 107-107.
That gave the 22-year-old Australian his fifth ATP title and second of 2021.
Ostapenko reached the semifinals there in 2018 and the quarterfinals the year before, and won the girls’ title there in 2014.