Sixth-seeded Jeremy Chardy won in three sets against Alexander Zverev in the first round of the Malaysian Open on Tuesday.
The Frenchman dropped the first set to the young German before going on to win 3-6, 6-3, 6-2 in just under two hours.
In other men's matches, Tatsuma Ito of Japan got the better if Finish veteran Jarkko Nieminen 6-2, 7-6 and Mikhail Kukushkin of Kazakhstan had little trouble beating India's Ramkumar Ramanathan 6-2, 6-2.
In an upset, Moldova's Radu Albot beat Serbian fifth seed Viktor Troicki 6-2, 7-6(5) and Nikoloz Basilashvili of Georgia got past Aleksandr Nedovyesov of Kazakhstan, who retired injured while behind 6-3, 1-0.
Canadian eighth seed Vasek Pospisil beat Yasutaka Uchiyama of Japan 6-3, 6-4 and Radek Stepanek of Czech Republic got past Japan's Yuichi Sugita 7-6(6), 6-0.
In the last singles match of the day, Cypriot Marcos Baghdatis won in three sets against Spain's Nicolas Almagro coming through 6-3, 6-7(5), 6-1.