Belluschi was at the heart of all their good work, and he gave warning of his ability to shoot from range when he forced Cech into a save on the stretch on 21 minutes, the Czech keeper also keeping out Silvestre Varela's follow-up.
Jamie Murphy came on in the 31st minute for Lasley, who failed to shake off an early rib knock, and immediately injected some much-needed ingenuity into Motherwell's play, setting up Saunders to shoot just over from long range.