Stan Wawrinka defeated Frederico Gil 7-5 6-3 6-4 in the SUI vs POR round robin on hard.
Wawrinka S. took it in straight sets.
Wawrinka S. and Gil F. faced 3 of the same opponents in the last 12 months. Wawrinka S. went 3–0 (100%) against them, Gil F. 1–3 (25%). Only 2 of the comparisons are context-comparable — too few for a conclusion.
Only 3 common opponents — small sample, treat as indicative.
Stan Wawrinka beat Frederico Gil 7-5 6-3 6-4. Umpiry, "Stan Wawrinka vs Frederico Gil — SUI vs POR Round Robin", https://umpiry.com/match/2011-07-08/gil-vs-wawrinka-sui-vs-por-rr?utm_source=cite (as of 8 July 2011).