Top seeds Ana Ivanovic and Sara Errani defeated qualifier Nicole Vaidisova and American Lauren Davis in the 1st round of the Monterrey Open on Tuesday. It was a terrible day for American players with 4 defeats in 4 matches.
In addition to Davis, who won just 3 games against Errani, 6th seed Alison Riske only won 4 games against former Major finalist Vera Zvonareva, Shelby Rogers only won 2 against Ukrainian Lesia Tsurenko, while Bettanie Mattek-Sands was the only American to win a set before falling in 3 to Francesca Schiavone.
In the second round, Ivanovic will play French Paulina Parmentier while Errani will take to court against Hungarian qualifier Timea Babos. All the results: [1] Ana Ivanovic (SRB) d [Q] Nicole Vaidisova (CZE) 6 - 1, 7 - 6 (4)
Pauline Parmentier (FRA) d Aleksandra Krunic (SRB) 3 - 6, 6 - 4, 6 - 1
Vera Zvonareva (RUS) d [6] Alison Riske (USA) 6 - 4, 6 - 0
Kristina Mladenovic (FRA) d Tereza Smitkova (CZE) 6 - 4, 6 - 4
[2] Sara Errani (ITA) d Lauren Davis (USA) 6 - 0, 6 - 3
[Q] Timea Babos (HUN) d Silvia Soler-Espinosa (ESP) 6 - 4, 6 - 3
[4] Timea Bacsinszky (SUI) d Yanina Wickmayer (BEL) 7 - 6 (8), 3 - 6, 6 - 4
Lesia Tsurenko (UKR) d Shelby Rogers (USA) 6 - 2, 6 - 0
[Q] Urszula Radwanska (POL) d Maria-Teresa Torro-Flor (ESP) 7 - 6, 7 - 6 (3)
[8] Magdalena Rybarikova (SVK) d [WC] Jovana Jaksic (SRB) 6 - 3, 3 - 6, 7 - 5
Polona Hercog (SLO) d [WC] Ana Sofia Sanchez (MEX) 6 - 2, 6 - 3
[WC] Francesca Schiavone (ITA) d [Q] Bethanie Mattek-Sands (USA) 3 - 6, 7 - 6 (3), 6 - 4
[3] Caroline Garcia (FRA) d Karin Knapp (ITA) 7 - 5, 7 - 6 (5)
Johanna Larsson (SWE) d Kiki Bertens (NED) 6 - 3, 6 - 2 Follow Filippo on Twitter @FilippoScala1