ATP tennis predict — Gauthier Onclin vs Vitaliy Sachko

Grand Slam Hard US Open · qualification - 1. round 18:30

Predicted probability

Gauthier Onclin

Belgium

67.77%

Vitaliy Sachko

Ukraine

32.23%

Average Odds

1.37 / 3.00

Market probability

68.65% / 31.35%

Why This Prediction?

Gauthier Onclin is the favorite because he has a higher Elo rating on hard courts (1677 vs 1436), a higher Elo rating (1667 vs 1648) and a stronger serve (65.7% vs 60.4% of service points won).

Player Comparison

1667.4 Elo 1648.3

1676.7 Elo (surface) 1435.6

14 Wins 23

7 Wins (surface) 13

7 Last 15 form 7

1 Head-to-head wins 0

0.875 Dominance ratio 0.771

158 Rank 188

25.5 Age 29.1

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.

Gauthier Onclin

Heavy favorite (odds below 1.30) 4W–0L · 100.0%

Favorite (odds 1.30-1.80) 4W–6L · 40.0%

Even match (odds 1.80-2.20) 1W–3L · 25.0%

Underdog (odds 2.20-4.00) 1W–2L · 33.3%

Heavy underdog (odds above 4.00) 0W–0L · 0.0%

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

Vitaliy Sachko

Heavy favorite (odds below 1.30) 0W–0L · 0.0%

Favorite (odds 1.30-1.80) 8W–1L · 88.9%

Even match (odds 1.80-2.20) 1W–3L · 25.0%

Underdog (odds 2.20-4.00) 2W–5L · 28.6%

Heavy underdog (odds above 4.00) 0W–0L · 0.0%

20 matches with market odds since 2026-06-02.

Serve & Return

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

Gauthier Onclin Vitaliy Sachko

1st Serve In %

60.1%

62.8%

1st Serve Points Won %

70.0%

66.4%

2nd Serve Points Won %

45.9%

43.3%

Return Points Won vs 1st Serve %

26.2%

32.8%

Return Points Won vs 2nd Serve %

54.7%

49.6%

Aces per Service Game

0.53

0.45

Double Faults per Service Game

0.30

0.23

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

1st Serve In %

59.1%

63.6%

1st Serve Points Won %

71.3%

61.0%

2nd Serve Points Won %

55.7%

53.3%

Return Points Won vs 1st Serve %

32.8%

31.1%

Return Points Won vs 2nd Serve %

50.0%

48.3%

Aces per Service Game

0.17

0.31

Double Faults per Service Game

0.22

0.27

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.

Gauthier Onclin Vitaliy Sachko

Break Points Saved %

59.7%

57.1%

Break Points Converted %

47.9%

43.1%

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

Break Points Saved %

59.6%

67.9%

Break Points Converted %

53.0%

43.8%

Based on each player's last 10 Challenger matches.

Head-to-Head

Gauthier Onclin 1 – 0 Vitaliy Sachko

Hard US Open · 2026-08-25

qualification - 1. round

Vitaliy Sachko #188

Gauthier Onclin #158

7-5 7-5

1 Aces 14

1 Double Faults 2

72 Service Points 78

44 First Serve In 46

26 First Serve Won 33

10 Second Serve Won 11

5 Break Points Saved 3

11 Break Points Faced 7

13 Winners 26

27 Unforced Errors 20

3 Average Odds 1.4

Clay Ostrava CH · 2023-04-24

R32

Gauthier Onclin #214

Vitaliy Sachko #268

4-6 6-4 6-2

3 Aces 2

2 Double Faults 5

91 Service Points 100

51 First Serve In 58

32 First Serve Won 33

22 Second Serve Won 20

8 Break Points Saved 7

12 Break Points Faced 13

- Winners -

- Unforced Errors -

- Average Odds -

Gauthier Onclin vs Vitaliy Sachko — Prediction