Jerome Kym vs Sascha Gueymard WayenburgIasi Round of 16

Iasi · CHALLENGER · Round of 16
#196ATP
1599ELO
1529Clay ELO
$89kYTD
$731kCAREER
23 yrs · 198 cm · Right-handed
Last 10
WLWWLWLLLL
Sets
Wednesday, 8 July 2026 ·
clay
#283ATP
1413ELO
1369Clay ELO
22 yrs · 188 cm · Right-handed
Last 10
WLWWLWLLLL
Kym J.
vs
Gueymard Wayenburg S.

Jerome Kym faces Sascha Gueymard Wayenburg in the Iasi round of 16 on clay. Jerome Kym is the paper favourite — ranked #196, a roughly 160-point clay Elo advantage — but Sascha Gueymard Wayenburg arrives in form, winning 3 of their last 5 on clay to Jerome Kym's 1.

Win Probability

Pre-match · updated 17:21 UTC
Kym J.80%
Gueymard Wayenburg S.20%
Toss-up
50–58%
Slight edge
58–67%
Clear favourite
67–80%
Strong favourite
80%+

Clear favourite · Kym J. clearly ahead, but no certainty

Calibrated model · 63% favourite accuracy (2025–26, out-of-sample). Probability is a statistical estimate, not a certainty. How it works.

Key context

Umpiry Score

Pre-match
6.8
Slight advantageUmpiry Score
4.6
Heavy underdogUmpiry Score
  • Back-to-back day (−0.5)
Form & Matchup
7.0+160 Clay Elo edge
Surface ELO
3.0Clay Elo 1369
7.3Overall Elo 1598
ELO gap
2.7Overall Elo 1412
5.0No prior meetings
H2H
5.0No prior meetings
4.04 of last 10 on clay
Surface form
4.84 of last 10 on clay
Fatigue & Travel
4.02 three-setters in 14 days
3-set count
0.03 three-setters 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.

Form trajectory

Direction of recent form — results vs Elo expectation blended with serve/return vs each player's baseline, over the last few months. About

13 vs 26 matches

Statistics

This season
1st serve in·Even
63%
63%
1st serve points won·Slight edge
77%
69%
2nd serve points won·Slight edge
53%
47%
Service points won·Slight edge
68%
61%
Return points won·Even
36%
39%
Break points saved·Even
60%
57%
Aces / match·Clear edge
8.5
6.9
Double faults / match·Clear edge
1.7
3.0

Averages over each player's completed matches in the selected window (13 vs 26). ATP, WTA & Challenger.

Serve vs return

This season
Kym J.serving82% hold

wins 65% of points on serve vs Gueymard Wayenburg S.

Gueymard Wayenburg S.serving76% hold

wins 61% of points on serve vs Kym J.

Serve advantage — Kym J.

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
35
10
Break points saved·Dominant
91
63
Break points won·Even
21
20
Deciding sets·Slight edge
13
3
Tiebreaks·Dominant
81
27

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

Freshness

Recent load
Freshness·Even
76
76

Kym J.: 1 day rest · 1 match, 22 games (7d) · Gueymard Wayenburg S.: 4 days rest · 2 matches, 47 games (7d). Higher means fresher. About

Conditions

Court speed
Slowlow bounce, long rallies
SlowFast
Weather forecast
23°CRain
Wind 13 km/hHumidity 74%

Head to head

No previous meetings on record.