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Jerome Kym vs Jay Clarke — Prediction

Challenger Clay Zug challenger · 1. round

Predicted probability

Jerome Kym

Switzerland

80.24%

Jay Clarke

Great Britain

19.76%

Average Odds

1.28  /  3.47

Market probability

73.05%  /  26.95%

Why This Prediction?

Jerome Kym is the favorite because he has a higher Elo rating (1738 vs 1571), a higher Elo rating on clay courts (1735 vs 1585) and a stronger serve (68.2% vs 59.5% of service points won).

Player Comparison

1738.5 Elo 1571.2
1735.2 Elo (surface) 1584.9
76 Wins (Challenger) 156
57 Wins (surface) 54
9 Last 15 form 8
0 Head-to-head wins 0
1.102 Dominance ratio 1.055
198 Rank 239
23.4 Age 28.0
right Hand right

Performance vs. the Odds

Career record grouped by how big a favorite the market made each player, based on their average odds.

Jerome Kym

Heavy favorite (odds below 1.30) 4W–1L · 80.0%
Favorite (odds 1.30-1.80) 7W–4L · 63.6%
Even match (odds 1.80-2.20) 1W–1L · 50.0%
Underdog (odds 2.20-4.00) 0W–2L · 0.0%
Heavy underdog (odds above 4.00) 0W–0L · 0.0%

20 matches with market odds since 2026-05-26.

Jay Clarke

Heavy favorite (odds below 1.30) 1W–2L · 33.3%
Favorite (odds 1.30-1.80) 3W–1L · 75.0%
Even match (odds 1.80-2.20) 2W–2L · 50.0%
Underdog (odds 2.20-4.00) 1W–3L · 25.0%
Heavy underdog (odds above 4.00) 0W–0L · 0.0%

15 matches with market odds since 2026-05-26.

Serve & Return

Serve and return win rates from each player's last 10 matches at the selected level.

Jerome Kym Jay Clarke

1st Serve In %

62.0%
57.7%

1st Serve Points Won %

78.6%
70.4%

2nd Serve Points Won %

50.0%
48.6%

Return Points Won vs 1st Serve %

27.7%
32.1%

Return Points Won vs 2nd Serve %

50.5%
53.6%

Aces per Service Game

0.97
0.40

Double Faults per Service Game

0.34
0.22

Based on each player's last 10 ATP/Grand Slam matches.

1st Serve In %

58.4%
60.6%

1st Serve Points Won %

72.7%
62.4%

2nd Serve Points Won %

48.9%
44.3%

Return Points Won vs 1st Serve %

26.4%
33.9%

Return Points Won vs 2nd Serve %

45.4%
51.9%

Aces per Service Game

0.53
0.28

Double Faults per Service Game

0.20
0.18

Based on each player's last 10 Challenger matches.

Break Point Performance

How each player handles the biggest points - break points saved serving, and converted returning - from their last 10 matches at the selected level.

Jerome Kym Jay Clarke

Break Points Saved %

71.4%
63.7%

Break Points Converted %

32.9%
48.6%

Based on each player's last 10 ATP/Grand Slam matches.

Break Points Saved %

48.9%
60.4%

Break Points Converted %

33.9%
44.8%

Based on each player's last 10 Challenger matches.

Head-to-Head

Jerome Kym 00 Jay Clarke

Clay Zug challenger · 2026-07-20

1. round

Jerome Kym #198

Jay Clarke #239

1-6 6-4 6-4
16 Aces 3
3 Double Faults 4
90 Service Points 82
46 First Serve In 39
39 First Serve Won 26
14 Second Serve Won 21
6 Break Points Saved 7
11 Break Points Faced 11
- Winners -
- Unforced Errors -
1.3 Average Odds 3.5

Jerome Kym — Last 10

L L W L W W W W L W

Jay Clarke — Last 10

W L W W W L W W W L