Wednesday

At The Tennis Center at Crandon Park

Key Biscayne, Fla.

Purse: Men, $6.13 million (Masters 1000); Women, $6.13 million (Premier)

Surface: Hard-Outdoor

Singles

Men

First Round

Alexander Zverev, Germany, def. Michael Mmoh, United States, 7-6 (3), 7-6 (4).

Rajeev Ram, United States, def. Evgeny Donskoy, Russia, 7-5, 7-6 (7).

Inigo Cervantes, Spain, def. Andrey Rublev, Russia, 6-4, 6-2.

Kyle Edmund, Britain, def. Jiri Vesely, Czech Republic, 6-4, 5-7, 7-6 (6).

Lucas Pouille, France, def. Teymuraz Gabashvili, Russia, 7-5, 6-3.

Fernando Verdasco, Spain, def. Gilles Muller, Luxembourg, 7-6 (2), 6-3.

Dusan Lajovic, Serbia, def. Dennis Novikov, United States, 6-1, 7-6 (5).

Sam Groth, Australia, def. Victor Estrella Burgos, Dominican Republic, 6-3, 6-2.

Marcel Granollers, Spain, def. Bjorn Fratangelo, United States, 6-3, 7-5.

Albert Ramos-Vinolas, Spain, def. Alejandro Gonzalez, Colombia, 5-7, 6-2, 7-6 (3).

Mikhail Youzhny, Russia, def. Ernests Gulbis, Latvia, 6-4, 6-2.

Yoshihito Nishioka, Japan, def. Jared Donaldson, United States, 6-3, 6-4.

Vasek Pospisil, Canada, def. Diego Schwartzman, Argentina, 2-6, 6-3, 7-6 (4).

Taylor Fritz, United States, def. Simone Bolelli, Italy, 6-4, 6-2.

Juan Martin del Potro, Argentina, def. Guido Pella, Argentina, 6-0, 7-6 (4).

Juan Monaco, Argentina, def. Ivan Dodig, Croatia, 3-6, 6-3, 5-0, retirement.

Women

First Round

Heather Watson, Britain, def. Petra Cetkovska, Czech Republic, 6-1, 6-0.

Alize Cornet, France, def. Galina Voskoboeva, Kazakhstan, 6-4, 7-5.

Julia Goerges, Germany, def. Nao Hibino, Japan, 7-6 (6), 6-4.

Irina Falconi, United States, def. Francesca Schiavone, Italy, 7-5, 6-1.

Vania King, United States, def. Lourdes Dominguez Lino, Spain, 6-4, 6-4.

Yanina Wickmayer, Belgium, def. Karin Knapp, Italy, 6-2, 6-1.

Caroline Garcia, France, def. Mirjana Lucic-Baroni, Croatia, 2-6, 6-1, 6-3.

Carina Witthoeft, Germany, def. Aliaksandra Sasnovich, Belarus, 6-2, 4-6, 6-1.

Irina-Camelia Begu, Romania, def. Maria Sakkari, Greece, 6-1, 6-3.

Dominika Cibulkova, Slovakia, def. Johanna Larsson, Sweden, 4-6, 6-1, 6-2.

Christina McHale, United States, def. Misaki Doi, Japan, 6-2, 4-6, 7-5.

Kiki Bertens, Netherlands, def. Zheng Saisai, China, 6-3, 6-2.

CoCo Vandeweghe, United States, def. Samantha Crawford, United States, 6-4, 7-5.

Elena Vesnina, Russia, def. Jana Cepelova, Slovakia, 7-5, 6-3.

Lucie Hradecka, Czech Republic,def. Eugenie Bouchard, Canada, 6-4, 3-6, 6-2.

Kristyna Pliskova, Czech Republic, def. Paula Badosa Gibert, Spain, 6-3, 6-3.

Timea Babos, Hungary, def. Anna Tatishvili, United States, 7-6 (2), 6-2.

Naomi Osaka, Japan, def. Pauline Parmentier, France, 6-2, 2-6, 6-2.

Magda Linette, Poland, def. Bethanie Mattek-Sands, United States, 6-4, 6-7 (7), 6-3.

Monica Puig, Puerto Rico, def. CiCi Bellis, United States, 4-6, 6-3, 6-2.