ATP tennis predict — Takuya Kumasaka vs Colin Sinclair

Challenger Hard Astana 4 challenger · 1. round 09:00

Predicted probability

Takuya Kumasaka

Japan

49.75%

Colin Sinclair

N. Mariana Isl.

50.25%

Average Odds

1.79 / 1.94

Market probability

52.01% / 47.99%

Why This Prediction?

This is a very close match — there is no significant statistical edge for either player.

Player Comparison

1432.9 Elo 1468.8

1446.3 Elo (surface) 1475.8

23 Wins (Challenger) 57

23 Wins (surface) 52

6 Last 15 form 9

0 Head-to-head wins 0

1.075 Dominance ratio 1.190

549 Rank 503

27.8 Age 31.6

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.

Takuya Kumasaka

Heavy favorite (odds below 1.30) 1W–0L · 100.0%

Favorite (odds 1.30-1.80) 2W–1L · 66.7%

Even match (odds 1.80-2.20) 0W–2L · 0.0%

Underdog (odds 2.20-4.00) 1W–4L · 20.0%

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

11 matches with market odds since 2026-07-12.

Colin Sinclair

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

Favorite (odds 1.30-1.80) 1W–1L · 50.0%

Even match (odds 1.80-2.20) 2W–2L · 50.0%

Underdog (odds 2.20-4.00) 1W–0L · 100.0%

Heavy underdog (odds above 4.00) 1W–1L · 50.0%

9 matches with market odds since 2026-07-28.

Serve & Return

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

Takuya Kumasaka Colin Sinclair

1st Serve In %

—

60.3%

1st Serve Points Won %

—

68.4%

2nd Serve Points Won %

—

51.9%

Return Points Won vs 1st Serve %

—

27.4%

Return Points Won vs 2nd Serve %

—

41.9%

Aces per Service Game

—

0.39

Double Faults per Service Game

—

0.35

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

1st Serve In %

58.8%

60.7%

1st Serve Points Won %

72.4%

78.1%

2nd Serve Points Won %

53.9%

57.6%

Return Points Won vs 1st Serve %

31.1%

27.7%

Return Points Won vs 2nd Serve %

48.3%

45.1%

Aces per Service Game

0.35

0.73

Double Faults per Service Game

0.27

0.16

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.

Takuya Kumasaka Colin Sinclair

Break Points Saved %

—

14.3%

Break Points Converted %

—

20.0%

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

Break Points Saved %

64.6%

68.1%

Break Points Converted %

34.2%

36.9%

Based on each player's last 10 Challenger matches.

Head-to-Head

Takuya Kumasaka 0 – 0 Colin Sinclair

Hard Astana 4 challenger · 2026-08-11

1. round

Takuya Kumasaka #549

Colin Sinclair #503

6-2 7-6

3 Aces 6

2 Double Faults 1

64 Service Points 58

33 First Serve In 33

24 First Serve Won 27

23 Second Serve Won 12

4 Break Points Saved 1

4 Break Points Faced 3

- Winners -

- Unforced Errors -

1.8 Average Odds 1.9

Takuya Kumasaka vs Colin Sinclair — Prediction