Rafael Nadal the top seed and defending champion is into the fourth round at this years US Open. Nadal was a set and a break down against Karen Khachanov but fought back to win a thrilling match 5-7 7-5 7-6 7-6. World number one Nadal will now face Nikoloz Basilashvili in the last 16. The Wimbledon finalist and world number five Keven Anderson came through an epic five set match against Denis Shapovalov, winning 4-6 6-3 6-4 4-6 6-4 and will now play Dominic Thiem in the fourth round.