ATP Winston-Salem results

Following are the results from the ATP hardcourt tournament at Winston-Salem, the United States on Sunday (prefix number denotes seeding):

First round

Lu Yen-Hsun, Chinese Taipei, bt Robin Haase, Netherlands, 7-6 (7-4), 6-2

Santiago Giraldo, Colombia, bt Steve Darcis, Belgium, 2-0 (retired)

Diego Schwartzman, Argentina, bt Daniel Gimeno, Spain, 6-4, 7-6 (10-8)

Endi