Croatian third seed Donna Vekic was untroubled by Misaki Doi at the Mexican Open.
Donna Vekic cruised through her Mexican Open first-round clash, but fellow seed Maria Sakkari fell on Monday.
Vekic needed just over an hour to brush past Misaki Doi 6-0 6-3 in her opener at the WTA International event in Acapulco.
The Croatian third seed was thrashed in the previous clash between the pair in 2017, but broke five times in a convincing win in their second meeting.
Vekic was one of two seeds in action and the other, Sakkari, made a first-round exit at the hands of Monica Puig.
— WTA (@WTA) February 26, 2019
In a battle between two qualifiers, Beatriz Haddad Maia was too good for Irina Bara 6-0 6-2.
Wang Yafan breezed past Marie Bouzkova 6-2 6-2 and Katie Boulter beat Conny Perrin 6-4 7-5.
At the Oracle Challenger Series event at Indian Wells, former world number five and defending champion Sara Errani fell to a 6-3 5-7 6-2 loss to Allie Kiick.
There were wins for the likes of Timea Bacsinszky, Yanina Wickmayer and Jennifer Brady.