Results from Day 1 of the US Open 2013

First day results from the 2013 U.S. Open.

Philipp Kohlschreiber (22), Germany, def. Collin Altamirano, United States, 6-1, 6-3, 6-1.

Milos Raonic (10), Canada, def. Thomas Fabbiano, Italy, 6-3, 7-6 (6), 6-3.

Pablo Andujar, Spain, def. Thiemo de Bakker, Netherlands, 6-4, 6-4, 6-4.

Ana Ivanovic (13), Serbia, def. Anna Tatishvili, Georgia, 6-2, 6-0.

Maria Kirilenko (14), Russia, def. Yanina Wickmayer, Belgium, 6-1, 6-1.

Roberta Vinci (10), Italy, def. Timea Babos, Hungary, 6-4, 6-2.

Hsieh Su-wei, Taiwan, def. Klara Zakopalova (31), Czech Republic, 6-3, 6-3.

Camila Giorgi, Italy, def. Jana Cepelova, Slovakia, 6-2, 6-2.

Elena Vesnina (22), Russia, def. Annika Beck, Germany, 6-1, 6-1.

Bojana Jovanovski, Serbia, def. Andrea Petkovic, Germany, 6-2, 6-4.

Michelle Larcher de Brito, Portugal, def. Eleni Daniilidou, Greece, 6-4, 6-3.

Lucie Safarova, Czech Republic, def. Lesia Tsurenko, Ukraine, 6-3, 2-6, 6-4.

Petra Kvitova (7), Czech Republic, def. Misaki Doi, Japan, 6-2, 3-6, 6-1.