Tsitsipas, the world no.12, had no answers as Bellucci, who was the world no.92 at the start of the week, followed up his defeat of world No.7 Daniil Medvedev with another huge victory in 86 minutes.
Mattia Bellucci has taken Rotterdam by storm, staging upsets against Stefanos Tsitsipas and Daniil Medvedev to reach his maiden semifinal on the ATP tour.