By Press Association Jannik Sinner produced a remarkable display to destroy defending champion Daniil Medvedev and reach the Miami Open final. In a rematch of the Australian Open final, which had seen Medvedev lead by two sets to love before Sinner stormed back to claim his first grand slam title, the Italian dominated and ruthlessly took apart his rival. Sinner stormed to a 6-1 6-2 victory in just 69 minutes to reverse the result of last year’s final. The Italian lost his only match of the season so far to Carlos Alcaraz in the semi-finals in Indian Wells two weeks ago, but has been utterly d…