France’s Arthur Fils came back from a match point down to win the Japan Open with a 5-7, 7-6 (8/6), 6-3 victory over countryman Ugo Humbert on Tuesday.
Fils, the world number 24, came back from the brink to edge his Paris Olympics doubles partner in 3hr 4min in Tokyo.
It gave the 20-year-old Fils his third career title and second this year, following his success in Hamburg.
Humbert, the world number 19, lost a final for the first time in his career, having won the previous six.
He was bidding to become the first player in ATP tour history to win his first seven finals.