Nicolai Hojgaard followed in the footsteps of his twin brother to make history with his European Tour breakthrough at the Italian Open.
The 20-year-old Dane finished one clear of Adrian Meronk and Tommy Fleetwood on 13 under, with his brother Rasmus taking out the European Masters last week.
It makes the siblings the first brothers to win back-to-back events on the European Tour.
"It's crazy," said Hojgaard, who is a winner on Tour for the first time in his career and was joined by his brother on the green. "It's been such a tough day.
"I've been through every emotion in my body and brain so to finish it off with an up-and-down is perfect.
"It's what I've been working hard on all year and all my life so I'm really pleased with it."
Meronk scored a five-under 66 to have set the clubhouse lead, with Fleetwood making birdie at the last to join him.
It left Hojgaard needing a birdie at the last and he consequently delivered from three feet.
Francesco Laporta was outright fourth at 11 under, with Edoardo Molinari, Richard Bland and Masahiro Kawamura all a further shot back.