France's Gael Monfils won his first ATP title Sunday, capturing the Idea Prokom Open by defeating Germany's Florian Mayer 7-6 (6), 4-6, 7-5 in a match between unseeded players. The 18-year-old Monfils, a former No. 1 junior player, is ranked No. 65 and was appearing in his first ATP final. Monfils beat Italy's Potito Starace a day earlier to reach the title match.