Citi Open: Wolf upsets Shapovalov to reach last 16

American wildcard J.J. Wolf defeated Canadian Denis Shapovalov, the No 6 seed, 6-2, 6-7 (5), 6-3 to advance to the last 16 of the Citi Open at Rock Creek Park Tennis Center in Washington on Wednesday.

Wolf, ranked No 99, will play Dane Holger Rune, the No 9 seed, next.

In the previous round of the Citi Open, Washington D.C., the American won against Japanese qualifier Taro Daniel (6-2, 6-3).

With the loss, Shapovalov has now lost eight of his last nine matches on the tour.

Washington ATP 500, other second-round matches (Rock Creek Park Tennis Center, hard, USD 2.108.110, most recent results first):

• Tommy Paul vs. Nick Kyrgios
• Denis Kudla vs. Reilly Opelka
• Christopher Eubanks vs. Frances Tiafoe
• Jack Sock vs. Maxime Cressy: wednesday
• Grigor Dimitrov vs. Adrian Mannarino: wednesday
• Taylor Fritz (3) beat Alexei Popyrin: 6-4, 6-3
• Sebastian Korda beat Sebastian Baez (12): 6-1, 6-4
• Yoshihito Nishioka beat Alex De Minaur (11): 3-6, 7-6 (6), 6-2
• Emil Ruusuvuori beat Hubert Hurkacz (2): 6-4, 7-6 (3)
• Mikael Ymer beat Aslan Karatsev (15): 6-4, 3-6, 6-4
• Holger Rune beat Benoit Paire: 6-3, 6-2
• Karen Khachanov (7) beat Dominik Koepfer (Q): 6-7 (3), 7-5, 6-4
• Botic van de Zandschulp (8) beat Borna Gojo (Q): 7-6 (6), 6-7 (5), 6-4
• Andrey Rublev (1) beat Jack Draper: 6-4, 6-2
• Daniel Evans (16) beat Kyle Edmund: 6-1, 6-2