Jacob Grills defeated C. O'Connell 6-4 4-6 6-3 in the Australia F1 round of 16 on hard. The upset overturned the form book — C. O'Connell came in leading the head-to-head 2–0. Jacob Grills claimed a first win over C. O'Connell in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2019-03-31 | M15 Mornington 2 | SF | clay | C. O'Connell | 7-6(4) 6-3 |
| 2014-03-03 | Australia F3 | R32 | grass | C. O'Connell | 6-3 6-2 |
Averages over each player's completed matches in the selected window (127 vs 200). ATP, WTA & Challenger.
O'Connell C.: 2 days rest · 2 matches, 34 games (7d). Higher means fresher. About
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Per-surface Serve / Return Rating (0–100, percentile within the hard field, opponent-adjusted over 52 weeks). About