Jelena Ostapenko defeated Alison Riske 4-6 6-2 6-4 in the Australian Open round of 64 on hard. The result followed the form book — Jelena Ostapenko came in leading the head-to-head 1–0, defending last year's round of 128. Jelena Ostapenko extended the head-to-head to 2–0.
Ostapenko J. came through in three sets.
Ostapenko J. and Riske A. faced 5 of the same opponents in the last 12 months. Ostapenko J. went 3–2 (60%) against them, Riske A. 1–4 (20%). Ostapenko J. came out better against 2 of 5 comparable opponents, Riske A. against 0 — though 1 of those edges carries caveats (retirement).
Jelena Ostapenko beat Alison Riske 4-6 6-2 6-4. Umpiry, "Jelena Ostapenko vs Alison Riske — Australian Open Round of 64", https://umpiry.com/match/2022-01-19/ostapenko-vs-riske-australian-open-r64?utm_source=cite (as of 19 January 2022).