NUREMBERG, Germany (AP) — Oceane Dodin of France upset the third-seeded Zhang Shuai 6-7 (11), 6-3, 6-4 in the first round of the Nuremberg Cup on Monday.
The 57th-ranked Dodin next plays Japan's Misaki Doi, who progressed after opponent Maria Sakkari of Greece retired after their first set.
Fifth-seeded Alison Riske of the U.S. began her campaign by defeating Elise Mertens 6-4, 4-6, 6-3. Riske next faces another Belgian, Kirsten Flipkens, who had already defeated Ajla Tomljanovic of Croatia at the clay-court tournament.
The sixth-seeded Julia Goerges got her third win against Nao Hibino of Japan 7-5, 6-1, and fellow German Tatjana Maria, a wild card, had little difficulty against 18-year-old qualifier Marie Bouzkova of the Czech Republic, winning 6-0, 6-1.
Czech qualifier Barbora Krejcikova and Swiss qualifier Amra Sadikovic also advanced.