Gauthier Onclin vs Vitaliy Sachko — US Open Qualifying Round of 256

US Open · ATP · Qualifying Round of 256
Gauthier Onclin
BEL
Gauthier Onclin
#158ATP
1567ELO
1552Hard ELO
$100kYTD
$617kCAREER
25 yrs · 180 cm · Right-handed
Last 10 · pre-match
LWWWWLWLWW
0 — 2
Sets
Tuesday, 25 August 2026 ·
hard
Court 8 · 2nd on
Vitaliy Sachko
UKR
Vitaliy Sachko
#188ATP
1584ELO
1475Hard ELO
$158kYTD
$835kCAREER
29 yrs · 188 cm · Right-handed
Last 10 · pre-match
LLLWLLWLWL
Onclin G.
5-7 5-7
Sachko V.
Onclin G.
550
Sachko V.
772

Vitaliy Sachko defeated Gauthier Onclin in the US Open qualifying second round. The match ended with a score of 5-7, 5-7 in Sachko's favor. Key stats included Sachko's 7 aces and 73 percent first-serve win percentage, compared to Onclin's 1 ace and 68 percent first-serve win percentage.

Key context

Head to head

1–0
DateTournamentRoundSurfaceWinnerScore
2019-11-15M15 Meshref 3QFhardGauthier Onclin6-0 7-6(2)

Statistics

This season
Onclin G.Sachko V.
1st serve in·Slight edge
56%
63%
1st serve points won·Slight edge
72%
66%
2nd serve points won·Even
53%
50%
Service points won·Even
64%
60%
Return points won·Even
40%
39%
Break points saved·Even
60%
56%
Aces / match·Clear edge
1.9
3.6
Double faults / match·Dominant
3.5
2.0

Averages over each player's completed matches in the selected window (22 vs 22). ATP, WTA & Challenger.

Clutch

Under pressure
Onclin G.Sachko V.
Clutch Rating·Slight edge
46
51
Break points saved·Even
79
81
Break points won·Dominant
17
48
Deciding sets·Even
74
76
Tiebreaks·Dominant
50
19

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

Win Probability

Pre-match · updated 16:50 UTC
Onclin G.71%
Sachko V.29%
Toss-up
50–58%
Slight edge
58–67%
Clear favourite
67–80%
Strong favourite
80%+

Clear favourite · Onclin G. 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.

Umpiry Score

Pre-match
Onclin G.
6.6
Marginal edgeUmpiry Score
Sachko V.
5.2
Clear underdogUmpiry Score
Form & Matchup
6.0+77 Hard Elo edge
Surface ELO
4.0Hard Elo 1475
4.8Overall Elo 1567
ELO gap
5.2Overall Elo 1584
5.0First meeting on hard
H2H
5.0First meeting on hard
7.58 of last 10 on hard
Surface form
1.62 of last 10 on hard
0.0
Win streak
0.0
Fatigue & Travel
0.03 three-setters in 14 days
3-set count
Surface transition
6.0Clay → Hard
Context
5.0Didn't play here last year
Defending pts
5.0Didn't play 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.

Freshness

Recent load
Onclin G.Sachko V.
Freshness·Slight edge
77
72

Onclin G.: 4 days rest · 1 match, 24 games (7d) · Sachko V.: 2 days rest · 2 matches, 55 games (7d). Higher means fresher. About

Conditions

Court speed
Medium-fastrewards aggression
SlowFast
Weather
26°CMainly clear
Wind 13 km/hHumidity 53%

Draw