Greece's Stefanos Tsitsipas capped a breakthrough season by rallying from a set down to beat Australian Alex de Minaur in the Next Gen ATP final on Saturday.
The 20-year-old Tsitsipas, ranked 15th in the world, came through 2-4, 4-1, 4-3 (7/3), 4-3 (7/3) against 19-year-old de Minaur after one hour and 41 minutes for his second title after Stockholm last month.
Tsitsipas, one of the sport's most improved players this year after starting the season ranked 91st, also finished runner-up to Rafael Nadal in Barcelona and Toronto.
The top seed claimed the title by winning all five of his matches during the week, to succeed South Korea's Chung Hyeon, who won the inaugural edition last year in which Tsitsipas only played an exhibition match.