Jan Choinski vs Botic Van De ZandschulpUS Open Round of 128

US Open · ATP · Round of 128
#75ATP
1686ELO
1571Hard ELO
$265kYTD
$1.3MCAREER
30 yrs · 196 cm · Right-handed
Last 10
LLLWWWWWLW
Sets
Sunday, 30 August 2026 ·
hard
#71ATP
1743ELO
1711Hard ELO
$690kYTD
$6.6MCAREER
30 yrs · 191 cm · Right-handed
Last 10
LWWLWWLWWW
Choinski J.
vs
Van De Zandschulp B.

Jan Choinski faces Botic Van De Zandschulp in the US Open round of 128 on hard. Botic Van De Zandschulp is the paper favourite — ranked #71, defending last year's round of 128, a roughly 140-point hard Elo advantage — but Jan Choinski has won their only previous meeting, though none on hard.

Win Probability

Pre-match · updated 12:50 UTC
Choinski J.24%
Van De Zandschulp B.76%
Toss-up
50–58%
Slight edge
58–67%
Clear favourite
67–80%
Strong favourite
80%+

Clear favourite · Van De Zandschulp B. clearly ahead, but no certainty

Calibrated model · 65% favourite accuracy (2025–26, out-of-sample). Probability is a statistical estimate, not a certainty. How it works.

Key context

Common opponents

Last 12 months
3 common opponents · Choinski J. 0–4 · Van De Zandschulp B. 2–1 · small sample
Both lost · same surface
Includes tour-level, 125s, qualifying and team events (⚑). Walkovers excluded. Describes past results in different contexts — not a prediction.

Umpiry Score

Pre-match
5.6
Slight disadvantageUmpiry Score
6.8
Slight advantageUmpiry Score
Form & Matchup
3.3Hard Elo 1571
Surface ELO
6.7+139 Hard Elo edge
4.3Overall Elo 1686
ELO gap
5.7Overall Elo 1743
5.0First meeting on hard
H2H
5.0First meeting on hard
4.15 of last 10 on hard
Surface form
6.57 of last 10 on hard
0.0Lost last 3
Win streak
0.0
Fatigue & Travel
7.01 three-setter in 14 days
3-set count
Context
5.0Didn't play here last year
Defending pts
6.0Reached the R128 here last year

The Umpiry Score combines match-context factors — matchup, form, fatigue, travel and motivation — into a single 0–10 score, updated daily. Read how it works.

30 vs 25 matches

Statistics

This season
1st serve in·Even
64%
62%
1st serve points won·Even
69%
73%
2nd serve points won·Slight edge
51%
46%
Service points won·Even
63%
63%
Return points won·Even
36%
38%
Break points saved·Even
60%
60%
Aces / match·Clear edge
5.7
7.6
Double faults / match·Dominant
1.8
5.0

Averages over each player's completed matches in the selected window (30 vs 25). ATP, WTA & Challenger.

Serve vs return

This season
Choinski J.serving82% hold

wins 64% of points on serve vs Van De Zandschulp B.

Van De Zandschulp B.serving85% hold

wins 66% of points on serve vs Choinski J.

Even serve battle

Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About

Clutch

Under pressure
Clutch Rating·Clear edge
55
68
Break points saved·Even
90
93
Break points won·Dominant
20
51
Deciding sets·Slight edge
87
82
Tiebreaks·Dominant
41
74

Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About

Freshness

Recent load
Freshness·Slight edge
85
76

Choinski J.: 5 days rest · 1 match, 30 games (7d) · Van De Zandschulp B.: 2 days rest · 3 matches, 50 games (7d). Higher means fresher. About

Conditions

Court speed
Medium-fastrewards aggression
SlowFast
Weather forecast
26°COvercast
Wind 12 km/hHumidity 79%

Head to head

10
DateTournamentRoundSurfaceWinnerScore
2018-01-22Germany F2QFcarpetJan Choinski6-1 6-3

Draw