It was Pouille's fourth straight win against Gasquet, who was playing his sixth straight final at the tournament. Gasquet won it in 2013, '15 and '16 but missed out on a 15th career title.
Pouille prevented his fifth-seeded countryman from dictating rallies and forced six chances on Gasquet's serve, breaking him once. He did not face a single break point on his own serve and hit 10 aces in a comprehensive performance.
Pouille trailed 6-1, 5-5 in his semifinal Saturday against third-seeded Jo-Wilfried Tsonga when his opponent retired with a hamstring injury.