Citi Open: Korda into last eight as Kokkinakis retires

American Sebastian Korda, the No 4 seed, advanced to the last eight of the Citi Open when Australian Thanasi Kokkinakis retired at the William H.G. FitzGerald Tennis Center in Washington.

Korda, ranked No 22, led 6-7 (1), 7-5, 3-2 when Kokkinakis, ranked No 91, pulled out at the William H.G. FitzGerald Tennis Center in Washington on Thursday evening.

The American will play Australian Jordan Thompson, the No 7 seed, next.

Sebastian Korda defeated Chilean Cristian Garin (6-3, 6-2) ahead of his victory.

In the previous rounds of the Washington D.C. tournament, the Australian won against Max Purcell (6-7 (4), 6-4, 6-3) and No 14 seed Aleksandar Vukic (6-4, 7-6 (4)).

Washington ATP 500, other last-16 results (William H.G. FitzGerald Tennis Center, hard, USD 2.100.230, most recent results first):

• Andrey Rublev vs. Arthur Rinderknech
• Aleksandar Kovacevic vs. Frances Tiafoe
• Brandon Nakashima vs. Ben Shelton: thursday
• Jordan Thompson beat Giovanni Mpetshi Perricard (9): 7-5, 6-4
• Alex Michelsen (15) beat Seong-Chan Hong (Q): 6-3, 6-3
• Denis Shapovalov (WC) beat Miomir Kecmanovic (12): 4-6, 6-4, 6-2
• Flavio Cobolli (10) beat Alejandro Davidovich Fokina (8): 1-6, 7-6, 7-6 (7)