Newcastle came into the game hunting their second trophy of the season, having won their eighth SLB Trophy in January.
Last month, they were runners-up in the European North Basketball League but fell just short in their attempt to add a first European title to their domestic successes.
Marc Steutel’s side finished the league season fifth in the table, 18 points behind the Riders, and beat last season’s champions London Lions in the semi-finals.
The Riders overturned a 10-point semi-final, first-leg deficit to beat Sheffield Sharks by 20 points in the return to book their spot in London.
The final would prove much smoother for Paternostro’s side.
With the Eagles briefly leading in the opening minute, the Riders took control and built a commanding 12-point lead in the opening quarter.
By the end of the third quarter that lead had been extended to 20 as the Riders took full control, and they scored 30 points in a clinical 10-minute period as they cruised to victory in the packed O2 for their first championship win for three years.