Martin Damm slams top-seeded Daniil Medvedev at Winston-Salem

Wild-card entrant Martin Damm needed just 1 hour, 22 minutes to knock out No. 1 seed Daniil Medvedev of Russia 7-5, 6-3 in second-round action on Tuesday at the Winston-Salem Open in North Carolina.

The 6-foot-8 Damm used his length at the net to pull off the upset. While Medvedev won just 2 of 4 points when he was at the net, Damm won 20 of his 28 advances. Damm also never dropped his serve, saving both break points he faced.

No. 2 seed Luciano Darderi of Italy and No. 3 seed Ignacio Buse of Peru were pushed to three sets before winning their second-round matches while No. 4 seed Arthur Fery of Great Britain needed just two sets.

Belgium's Raphael Collignon, the No. 5 seed, and Argentina's Mariano Navone, the No. 6 seed, did not survive the second round. Australia's Rinky Hijikata rallied to handle Collignon 3-6, 7-6 (7), 7-6 (5) while Australia's James Duckworth dropped Navone 6-3, 7-6 (5).

Frenchmen Luca Van Assche and Quentin Halys, the 11th and 12th seeds, respectively, were upset in the second round, as was No. 14 seed Tomas Machac of the Czech Republic.

Eighth-seeded Juan Manuel Cerundolo of Argentina and 13th-seeded Botic van de Zandschulp of the Netherlands both earned straight-set wins.

No. 9 seed Adrian Mannarino of France was among the three seeded players engaged in second-round action on Tuesday night.

--Field Level Media