Novak Djokovic defeated John Isner 7-5 3-6 6-3 6-7 6-4 in the SRB vs USA round robin on clay.
Djokovic N. came through in five sets.
Djokovic N. and Isner J. faced 13 of the same opponents in the last 12 months. Djokovic N. went 13–6 (68%) against them, Isner J. 7–7 (50%). Djokovic N. came out better against 5 of 12 comparable opponents, Isner J. against 2 — though 1 of those edges carries caveats (retirement).
Novak Djokovic beat John Isner 7-5 3-6 6-3 6-7 6-4. Umpiry, "Novak Djokovic vs John Isner — SRB vs USA Round Robin", https://umpiry.com/match/2010-03-05/djokovic-vs-isner-srb-vs-usa-rr?utm_source=cite (as of 5 March 2010).