Garbine Muguruza, Madison Keys and Domonika Cibulkova wasted little time in booking their places in the quarter-finals of the Generali Ladies Linz on Thursday.
The trio of top seeds all raced into the next round following one-sided straight sets victories.
Keys was the first to advance with a 6-2, 6-0 victory over Misaki Doi in a match that lasted just 48 minutes.
The American broke serve five times in all and was never challenged on her own serve.
Slovakia's Cibulkova also looked convincing in her 6-1, 6-3 victory over Germany's Annika Beck.
Beck shocked her opponent with a break in the very first game of the match, but Cibulkova hit back with three straight breaks of her own to wrap up the first set in just 30 minutes.
The German put up more of a fight in the second set, claiming two more breaks, but her own serve continued to be broken almost at will and Cibulkova was able to wrap up the victory fairly comfortably.
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Muguruza, meanwhile, spent just over an hour on court as she thrashed Monica Niculescu 6-1, 6-1.
Others to advance to the last eight on Thursday included Viktorija Golubic and Anastasia Pavlyuchenkova.