Nice - Austrian Dominic Thiem snatched his maiden ATP career title when he beat Argentine fourth seed Leonardo Mayer 6-7 (8/10), 7-5, 7-6 (7/2) to win the Nice Open on Saturday.
World No 42 Thiem, labelled one of the world's top prospects, lacked composure in the first set as he lost the tiebreak 10-8.
He took the only break of the match in the 12th game of the second set to level the tie, powering through the final set's decider 7-2.
The 21-year-old Thiem is on a third-round collision course with local favourite Gael Monfils should they both progress at the French Open.