Italian Jannik Sinner completed a remarkable season on Sunday by sealing his country a second successive Davis Cup title with a 2-0 victory over Netherlands in the final at the southern Spanish city of Malaga. Matteo Berrettini laid the foundations with a 6-4, 6-2 victory over Botic Van de Zandschulp, before Jannik Sinner defeated Tallon Griekspoor 7-6(2), 6-2.