Kevin Anderson defeated Grega Zemlja 6-4 6-4 in the Casablanca quarter-final on clay.
Anderson K. took it in straight sets.
Anderson K. and Zemlja G. faced 3 of the same opponents in the last 12 months. Anderson K. went 2–1 (67%) against them, Zemlja G. 0–3 (0%). Only 2 of the comparisons are context-comparable — too few for a conclusion.
Only 3 common opponents — small sample, treat as indicative.