ATP tennis predict — Zdenek Kolar vs Olle Wallin

Challenger Clay Tulln challenger · 1. round 10:00

Predicted probability

Zdenek Kolar

Czech Republic

42.50%

Olle Wallin

Sweden

57.50%

Average Odds

2.04 / 1.72

Market probability

45.74% / 54.26%

Why This Prediction?

Olle Wallin is the favorite because he has a higher Elo rating (1664 vs 1569), a higher Elo rating on clay courts (1702 vs 1596) and a stronger serve (62.9% vs 57.8% of service points won).

Player Comparison

1569.3 Elo 1664.2

1595.6 Elo (surface) 1702.4

269 Wins (Challenger) 31

188 Wins (surface) 25

6 Last 15 form 10

0 Head-to-head wins 0

1.059 Dominance ratio 1.096

175 Rank 414

29.9 Age None

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.

Zdenek Kolar

Heavy favorite (odds below 1.30) 3W–0L · 100.0%

Favorite (odds 1.30-1.80) 2W–6L · 25.0%

Even match (odds 1.80-2.20) 1W–1L · 50.0%

Underdog (odds 2.20-4.00) 2W–3L · 40.0%

Heavy underdog (odds above 4.00) 0W–2L · 0.0%

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

Olle Wallin

Heavy favorite (odds below 1.30) 8W–0L · 100.0%

Favorite (odds 1.30-1.80) 4W–2L · 66.7%

Even match (odds 1.80-2.20) 2W–1L · 66.7%

Underdog (odds 2.20-4.00) 4W–3L · 57.1%

Heavy underdog (odds above 4.00) 0W–2L · 0.0%

26 matches with market odds since 2026-06-15.

Serve & Return

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

Zdenek Kolar Olle Wallin

1st Serve In %

61.5%

62.3%

1st Serve Points Won %

66.2%

68.3%

2nd Serve Points Won %

52.0%

55.7%

Return Points Won vs 1st Serve %

28.4%

26.4%

Return Points Won vs 2nd Serve %

45.4%

41.0%

Aces per Service Game

0.35

0.46

Double Faults per Service Game

0.32

0.00

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

1st Serve In %

54.5%

60.3%

1st Serve Points Won %

65.7%

71.5%

2nd Serve Points Won %

58.2%

47.6%

Return Points Won vs 1st Serve %

40.1%

34.1%

Return Points Won vs 2nd Serve %

53.6%

53.4%

Aces per Service Game

0.35

0.36

Double Faults per Service Game

0.31

0.28

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.

Zdenek Kolar Olle Wallin

Break Points Saved %

52.4%

38.5%

Break Points Converted %

33.9%

45.5%

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

Break Points Saved %

60.3%

55.7%

Break Points Converted %

47.1%

37.2%

Based on each player's last 10 Challenger matches.

Head-to-Head

Zdenek Kolar 0 – 0 Olle Wallin

Clay Tulln challenger · 2026-09-08

1. round

Zdenek Kolar #175

Olle Wallin #414

6-3 7-5

2 Aces 4

2 Double Faults 4

70 Service Points 72

40 First Serve In 31

25 First Serve Won 19

17 Second Serve Won 17

9 Break Points Saved 6

12 Break Points Faced 11

- Winners -

- Unforced Errors -

2.0 Average Odds 1.7

Zdenek Kolar vs Olle Wallin — Prediction