James Duckworth vs Jason KublerPrediction, Head-to-Head Results, and Stats
James Duckworth and Jason Kubler have met 4 times since 2018; James Duckworth leads 3–1. Their first meeting came at Washington in 2018 on hard. On hard courts Duckworth leads 2–0. Across all meetings Duckworth has taken 6 sets to Kubler's 3. Their most recent meeting: James Duckworth won at Sydney Challenger (2025).
Spread & Straight-Sets Form
Completed best-of-3 matches · Last 12 months
| Indicator | Duckworth | Kubler | ||
|---|---|---|---|---|
| Indicator | James Duckworth | Jason Kubler | ||
| Wins in straight sets | 70% | 28/40 | 88% | 7/8 |
| Wins a set when losing | 38% | 10/26 | 20% | 1/5 |
| Goes to a deciding set | 33% | 22/66 | 15% | 2/13 |
| Covers −1.5 sets as favorite | 54% | 19/35 | 43% | 3/7 |
| Covers +1.5 sets as underdog | 59% | 16/27 | 50% | 2/4 |
| Tiebreak sets won | 40% | 14/35 | 50% | 1/2 |
| Wins after taking set 1 | 83% | 30/36 | 100% | 8/8 |
| Wins 2-0 after taking set 1 | 78% | 28/36 | 88% | 7/8 |
Colored rows are higher-is-better: green above 50%, red below. Favorite/underdog set by book odds; cover rows count only matches with odds on record. Head-to-head: 3 of 4 completed meetings ended in straight sets (Duckworth 2, Kubler 1).
Style Matchup
Playing styles and historical archetype record
Duckworth
🤖 Servebot
Kubler
👑 The Complete Package
Matchup analysis
🤖 Servebot vs 👑 The Complete Package is historically tight (51% vs 49%, 616 matches). Neither style has a clear edge, so form, surface, and the head-to-head matter most.
Previous meetings
4 career meetings, newest first
Nov 22, 2025
Sydney Challenger
H Hard · Semifinals
Jul 15, 2022
Hall of Fame Open - Newport
G Grass · Quarterfinals
Apr 12, 2019
Anning
C Clay · Round of 16
Aug 1, 2018
Washington
H Hard · Round of 32
Player ROI
Hypothetical if you put 1u on each player to win every one of their matches · Last 90 days
| Metric | Duckworth | Kubler |
|---|---|---|
| W-L | 8–6 | - |
| Avg odds | 2.55 | - |
| ROI % | +13.6% | - |
| Units P/L | +1.91u | - |
Travel
Last 30 days
| Metric | Duckworth | Kubler |
|---|---|---|
| Countries | 2 | — |
| Events | 3 | — |
| Matches | 8 | — |
| Distance | 1,024 mi · 1,648 km | — |
| Route | CAN → USA | — |
Host country from the tournament each match was played in, over the last 30 days. Route is the order of countries visited; consecutive stops in the same country are shown once. Distance is the great-circle total between host cities, shown only when every stop in the window is geocoded. A rough fatigue signal, not a headline stat.
Common opponents
Results vs. opponents both players faced · Last 12 months
Kubler has a higher win rate against shared opponents (100% vs Duckworth's 50%).
| Opponent | Duckworth | Kubler |
|---|---|---|
| Alex Bolt | L 57 16 | W 75 63 |
| Coleman Wong | W 63 64 | W 76 63 |
Recent Form
Last five matches per player
Fabian Marozsan
Winston-Salem Open - Winston-Salem · Quarterfinals
Aug 28
Lorenzo Sonego
Winston-Salem Open - Winston-Salem · 3rd Round
Aug 27
Mariano Navone
Winston-Salem Open - Winston-Salem · 2nd Round
Aug 26
Quinn Vandecasteele
Winston-Salem Open - Winston-Salem · 1st Round
Aug 24
Arthur Fery
Cincinnati Open - Cincinnati · 2nd Round
Aug 16
J.J. Wolf
Cincinnati Open - Cincinnati · 1st Round
Aug 14
Alex de Minaur
National Bank Open - Montreal · 2nd Round
Aug 5
Christopher O'Connell
National Bank Open - Montreal · 1st Round
Aug 3
Mikal Statham
M25 Timaru 1 · 2nd Round
Mar 12
Mikal Oliver Statham
M25 Timaru · Round of 16
Mar 12
Luca Bland
M25 Timaru · Round of 32
Mar 11
Luca Bland
M25 Timaru 1 · 1st Round
Mar 10
Emilio Camacho
Davis Cup, World Group, Q, ECU-AUS 3-1 · Rubber 4
Feb 8
Frances Tiafoe
Australian Open - Melbourne · 1st Round
Jan 18
Li Tu
Playford Challenger · 1st Round
Nov 25
James Duckworth
Sydney Challenger · Semifinals
Nov 22
Rivalry momentum
Cumulative head-to-head lead over time
Win rate
Matches, sets and games won · Last 12 months · 14–71 matches
| Metric | Duckworth | Kubler |
|---|---|---|
| Matches won | 59% | 57% |
| Sets won | 56% | 55% |
| Games won | 53% | 53% |
Record by tier
Head-to-head record by tournament tier
| Stage | Duckworth | Kubler |
|---|---|---|
| ATP 500 | 1 | 0 |
| ATP Challenger Tour | 2 | 0 |
| ATP World Tour 250 | 0 | 1 |
By surface
Head-to-head record per surface
| Surface | Duckworth | Kubler |
|---|---|---|
| Hard | 2 | 0 |
| Clay | 1 | 0 |
| Grass | 0 | 1 |
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