Viktor Troicki advanced to the second round of the Nastase Tiriac Trophy by beating Marinko Matosevic of Australia 7-6 (5), 6-3 on Monday.
The eighth-seeded Serb broke once in each set and served eight aces, while Matosevic failed to convert any of his three breakpoint chances.
David Goffin defeated Romanian wild card Adrian Ungur 6-3, 6-1 in 55 minutes. The Belgian could next face 2011 champion Florian Mayer.
Also in the first round, Germany's Daniel Brands downed Tatsuma Ito of Japan 6-3, 3-6, 4-2.
In the final round of qualifying, Sergiy Stakhovsky, Matthias Bachinger, Flavio Cipolla and Jaroslav Pospisil won to advance to the main draw.