
Jason Kubler defeated James Duckworth 7-5 7-6 in the Newport quarter-final on grass. The upset overturned the form book — James Duckworth came in ranked #86, leading the head-to-head 3–0. Jason Kubler claimed a first win over James Duckworth in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2018-07-30 | Washington | R32 | hard | James Duckworth | 1-6 6-2 7-6 |
| 2013-03-25 | Australia F5 | F | clay | James Duckworth | 7-6(9) 6-2 |
| 2011-08-15 | Italy F23 | QF | clay | James Duckworth | 6-4 6-3 |
Averages over each player's completed matches in the selected window (180 vs 200). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
Duckworth J.: 5 days rest · 2 matches, 56 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 grass field, opponent-adjusted over 52 weeks). About