Barbora Krejcikova beat Suzan Lamens in the opening round of the Hamburg European Open for her first victory on clay in over a year.
The third seed, who claimed a second Wimbledon women's double title this month, saw off qualifier Lamens 6-2 6-4 to reach the last 16.
Her most recent victory on a clay-court surface prior to Monday came at last year's French Open, winning both the singles and women's doubles titles at Roland Garros in 2021.
Last year's runner-up Andrea Petkovic is also through thanks to a 6-3 6-3 victory over Tamara Korpatsch and will now face Misaki Doi, who defeated Oksana Selekhmeteva.
At the Palermo Ladies Open, meanwhile, fourth seed Sara Sorribes Tormo battled back from a set down to overcome Ana Bogdan 2-6 6-4 6-2.
Third seed Zhang Shuai also avoided an upset as she secured a 7-6 (7-3) 7-6 (9-7) victory over Rebeka Masarova, while Irina Begu required three sets to beat Marina Bassols.