Sloane Stephens beaten in Acapulco but Daria Gavrilova advances

Michael Graham
ACAPULCO, MEXICO - MARCH 01: Sloane Stephens of USA takes a forehand shot during the match between Sloane Stephens of USA and Stefanie Vogele of Switzerland as part of the Telcel ATP Mexican Open 2018 on March 01, 2018 in Acapulco, Mexico. (Photo by Hector Vivas/Getty Images)

Top Seed Sloane Stephens has been knocked out the Mexico Open by world number 138 Stefanie Voegele.

The US Open champion appeared sluggish against Switzerland’s Voegele, who claimed her biggest win in five years with a 6-4 5-7 6-2 success.

Voegele will now face qualifier Rebecca Peterson, who beat fourth seed Zhang Shuai 6-2 6-1 to advance to the semi-final.

Elsewhere, number three seed Daria Gavrilova had no real problems, beating Veronica Cepede Royg 6-4 4-6 6-2, while defending champion Lesia Tsurenko overcame number two seed Kristina Mladenovic in straight sets.