Chun Hsin Tseng vs Vitaliy SachkoHamburg Round of 32

Hamburg · CHALLENGER · Round of 32
#272ATP
1554ELO
1541Clay ELO
$99kYTD
$1.7MCAREER
25 yrs · 175 cm · Right-handed
Last 10
LWLLLWWLWL
Sets
Monday, 10 August 2026 ·
clay
#189ATP
1584ELO
1550Clay ELO
$158kYTD
$835kCAREER
29 yrs · 188 cm · Right-handed
Last 10
LLWLWLLWWW
Hsin Tseng C.
vs
Sachko V.

Chun Hsin Tseng faces Vitaliy Sachko in the Hamburg round of 32 on clay. Vitaliy Sachko holds the paper edge — ranked #189. Recent clay form is closely matched.

Win Probability

Pre-match · updated 07:50 UTC
Hsin Tseng C.56%
Sachko V.44%
Toss-up
50–58%
Slight edge
58–67%
Clear favourite
67–80%
Strong favourite
80%+

Toss-up · Too close to call

Calibrated model · 63% 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
1 common opponents · Hsin Tseng C. 1–0 · Sachko V. 2–0 · small sample
Both won · same surface · incl. team event
Includes tour-level, 125s, qualifying and team events (⚑). Walkovers excluded. Describes past results in different contexts — not a prediction.

Umpiry Score

Pre-match
5.7
Slight disadvantageUmpiry Score
5.9
Even matchUmpiry Score
Form & Matchup
4.9Clay Elo 1541
Surface ELO
5.1+9 Clay Elo edge
4.6Overall Elo 1554
ELO gap
5.4Overall Elo 1584
5.0No prior meetings
H2H
5.0No prior meetings
4.65 of last 10 on clay
Surface form
4.55 of last 10 on clay
0.0
Win streak
0.0Lost last 2
Fatigue & Travel
7.01 three-setter in 14 days
3-set count
7.01 three-setter in 14 days
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.

22 vs 22 matches

Statistics

This season
1st serve in·Even
60%
63%
1st serve points won·Even
66%
66%
2nd serve points won·Even
48%
50%
Service points won·Even
59%
60%
Return points won·Even
41%
39%
Break points saved·Even
57%
56%
Aces / match·Clear edge
1.2
3.6
Double faults / match·Slight edge
1.7
2.0

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

Serve vs return

This season
Hsin Tseng C.serving67% hold

wins 57% of points on serve vs Sachko V.

Sachko V.serving64% hold

wins 56% of points on serve vs Hsin Tseng C.

Baseline battle — serve is shaky, expect plenty of breaks

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·Dominant
0
51
Break points saved·Slight edge
70
81
Break points won·Dominant
1
48
Deciding sets·Dominant
5
76
Tiebreaks·Clear edge
1
19

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

Freshness

Recent load
Freshness·Slight edge
82
87

Hsin Tseng C.: 4 days rest · 2 matches, 40 games (7d) · Sachko V.: 5 days rest · 1 match, 32 games (7d). Higher means fresher. About

Conditions

Court speed
Slowlow bounce, long rallies
SlowFast
Weather forecast
19°CRain
Wind 10 km/hHumidity 80%

Head to head

No previous meetings on record.

Draw