Norrie holds a 4-3 career record against Fritz and the winner of their last-16 clash could face world No 1 Novak Djokovic in the quarter-finals. zipp 303 650b De Sousa headed on stage knowing he had one foot in the next round of the competition, but former youth champion Humphries was out to spoil the party knowing he needed to win 5-2 or better to advance. zipp 303 650b The only time he had any difficulty was in the second round, when Mervyn King took the opening set. And he responded to that quickly to win 3-1. zipp 303 650b Even victories in all three of their remaining matches - India also play qualifiers Scotland and Namibia - may not be enough for a semi-final place, with Kohli's side relying on other results to go their way in Group 2. zipp 303 650b