(AP Photo/Nick Wass)
WASHINGTON (AP) Sixteen-year-old Francis Tiafoe lost his ATP tour debut while fellow Americans Robby Ginepri and Donald Young won their opening-round matches at the Citi Open on Monday.
Russia's Evgeny Donskoy defeated Tiafoe, the world's seventh-ranked junior player and a D.C.-area native, 6-4, 6-4.
Top-seeded Tomas Berdych will face Ginepri, who advanced to the second round with a 6-4, 6-2 victory over Alejandro Falla of Colombia 6-4, 6-2. Young beat Yuichi Sugita of Japan 6-4, 4-6, 6-4.