Pavlyuchenkova hit six aces but also helped Ruzic by committing eight double faults. Ruzic's second-round opponent will be Italy's Elisabetta Cocciaretto, who claimed a 6-3, 6-4 victory over France's Leolia Jeanjean.
Alycia Parks needed just 61 minutes to sweep Cristina Bucsa of Spain 6-2, 6-1, advancing to face countrywoman and No. 1 seed Emma Navarro. Not to be outdone, Slovakia's Rebecca Sramkova defeated Mexico's Victoria Rodriguez 6-0, 6-3 in a mere 58 minutes.
Later in the evening, No. 6 seed Linda Noskova of the Czech Republic saved a set point in the second-set tiebreaker while getting by Lulu Sun of New Zealand 7-6(2), 7-6(7), while wildcard Ajla Tomljanovic of Australia edged Mexico's Renata Zarazua 4-6, 6-3, 7-6(1).
Tennis in the Land
Russia's Anastasia Zakharova reached her first WTA Tour-level semi-final thanks to one win and one withdrawal Tuesday in Cleveland.
Zakharova won 23 of 32 first-service points (71.9%) as she eliminated No. 8 seed Hailey Baptiste 6-4, 6-3 in their Round of 16 match. Inclement weather Tuesday meant that only one other match was completed, as Germany's Eva Lys beat Russian Polina Kudermetova 6-4, 6-3.
However, Lys then withdrew from the event, according to the WTA website, allowing Zakharova to reach the semi-finals via walkover.
Baptiste's loss continued seeded players' run of misfortune in Cleveland. In the first round alone, the third, fifth, sixth and seventh seeds were shown the door.