Khachanov d. Koepfer

Khachanov beat Koepfer 6-7(3), 7-5, 6-4 in the second round at the Citi Open - Washington. Khachanov won 120 of 229 points (52%). Khachanov hit 9 aces to 5 and won 75% of points behind the first serve (51/68) against 65% for Koepfer. Khachanov converted 5 of 17 break points and saved 2 of 5 faced; Koepfer converted 3 of 5. Koepfer double-faulted 7 times. The match was played on hard in United States.