Jelena Jankovic defeated Ai Sugiyama 6-3 6-2 in the SRB vs JPN round robin on hard. The result followed the form book — Jelena Jankovic came in leading the head-to-head 3–0. Jelena Jankovic extended the head-to-head to 4–0.
Jankovic J. took it in straight sets.
Jankovic J. and Sugiyama A. faced 9 of the same opponents in the last 12 months. Jankovic J. went 13–5 (72%) against them, Sugiyama A. 6–7 (46%). Jankovic J. came out better against 3 of 9 comparable opponents, Sugiyama A. against 0.
Jelena Jankovic beat Ai Sugiyama 6-3 6-2. Umpiry, "Jelena Jankovic vs Ai Sugiyama — SRB vs JPN Round Robin", https://umpiry.com/match/2009-02-07/jankovic-vs-sugiyama-srb-vs-jpn-rr?utm_source=cite (as of 7 February 2009).