Sorana Cirstea, Romania, def. Pauline Parmentier, France, 6-3, 6-4.
Laura Siegemund, Germany, def. Marta Kostyuk, Ukraine, 4-6, 7-5, 6-2.
Antonia Lottner, Germany, def. Tamara Korpatsch, Germany, 4-6, 6-3, 6-2.
Monica Puig, Puerto Rico, def. Fiona Ferro (7), France, 6-1, 6-0.
Monica Niculescu, Romania, def. Alison van Uytvanck (4), Belgium, 2-4, ret.
Elena Rybakina (3), Kazakhstan, def. Chloe Paquet, France, 6-2, 7-6 (2).
Elise Mertens (1), Belgium, def. Bibiane Schoofs, Netherlands, 6-0, 6-3.
Andrea Petkovic, Germany, def. Camila Giorgi (6), Italy, 0-6, 6-4, 6-4.
Caty McNally and Cori Gauff, United States, def. Misaki Doi and Makoto Ninomiya, Japan, 6-3, 6-7 (5), 10-5.
Renata Voracova and Kristyna Pliskova (1), Czech Republic, def. Fiona Ferro, France, and Jil Teichmann, Switzerland, 6-2, 6-2.Tuesday
At Kockelscheuer Sport Centre
Surface: Hardcourt indoor
LUXEMBOURG, LUXEMBOURG (AP) _ Results Tuesday from BGL BNP Paribas Luxembourg Open at Kockelscheuer Sport Centre (seedings in parentheses):
Round Of 32
Round Of 16
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