Top-seeded Gilles Simon beat Fabio Fognini of Italy 6-4, 6-3 to win the Nastase Tiriac Trophy on Sunday.
The Frenchman managed to clinch a hat-trick of titles in Bucharest after winning the tournament in 2007 and '08.
Fognini, playing in his first ATP World Tour final, made a determined start and broke early for a 2-0 lead before Simon recovered to 2-2.
Simon broke again to lead 3-2 but immediately lost his own serve in a game where both players made several forays to the net.
At 3-3, Simon broke for the third time and held on to take the set, despite an apparent eye injury.
The second set was dominated by several long rallies, but Simon seemed more in control and at 2-2 broke to take the lead. Leading 5-3, Simon trailed 40-0 on Fognini's serve before rallying to win the match.