Also, eighth-seeded Jared Donaldson defeated fellow American Ernesto Escobedo.
Jul 24, 2017
Chung, who is ranked 67th, has never beaten a Top 10 player in seven attempts.
Jun 04, 2017
In other action, Elina Svitolina beat Magda Linette in straight sets.
Chung is trying to become the first South Korean to reach the fourth round of the French.
Jun 03, 2017
Coric, in second place behind Zverev, won his maiden ATP title in Marrakech in April.
May 04, 2017
by Brad Kallet