Andy Murray defeated Thanasi Kokkinakis 6-3 6-0 6-3 in the GBR vs AUS round robin on hard.
Murray A. took it in straight sets.
Murray A. and Kokkinakis T. faced 4 of the same opponents in the last 12 months. Murray A. went 4–6 (40%) against them, Kokkinakis T. 0–5 (0%). Murray A. came out better against 4 of 4 comparable opponents, Kokkinakis T. against 0 — though 1 of those edges carries caveats (retirement).
Only 4 common opponents — small sample, treat as indicative.
Andy Murray beat Thanasi Kokkinakis 6-3 6-0 6-3. Umpiry, "Andy Murray vs Thanasi Kokkinakis — GBR vs AUS Round Robin", https://umpiry.com/match/2015-09-18/kokkinakis-vs-murray-gbr-vs-aus-rr?utm_source=cite (as of 18 September 2015).