Tallon Griekspoor saved four match points before beating top-seeded Daniil Medvedev 2-6, 7-6 (7), 7-5 to reach the semifinals at the Dubai Championships on Thursday. When I won the second set, I was actually thinking 'how am I even still in this tournament? I probably should have been on the plane to Indian Wells already, said the Dutchman, ranked No.