ATP tennis predict — Rei Sakamoto vs Ji Sung Nam

Challenger Hard Shanghai challenger · 1. round 12:00

Predicted probability

Rei Sakamoto

Japan

80.94%

Ji Sung Nam

South Korea

19.06%

Average Odds

1.06 / 8.48

Market probability

88.89% / 11.11%

Why This Prediction?

Rei Sakamoto is the favorite because he has a higher Elo rating (1726 vs 1497), a higher Elo rating on hard courts (1665 vs 1536) and a stronger serve (71.0% vs 61.3% of service points won).

Player Comparison

1726.0 Elo 1496.8

1664.9 Elo (surface) 1535.7

61 Wins (Challenger) 91

51 Wins (surface) 85

9 Last 15 form 7

0 Head-to-head wins 0

1.017 Dominance ratio 0.910

157 Rank 1038

20.2 Age 33.1

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.

Rei Sakamoto

Heavy favorite (odds below 1.30) 4W–2L · 66.7%

Favorite (odds 1.30-1.80) 7W–2L · 77.8%

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%

19 matches with market odds since 2026-06-22.

Ji Sung Nam

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

Favorite (odds 1.30-1.80) 1W–0L · 100.0%

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

Underdog (odds 2.20-4.00) 0W–0L · 0.0%

Heavy underdog (odds above 4.00) 1W–2L · 33.3%

8 matches with market odds since 2026-05-24.

Serve & Return

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

Rei Sakamoto Ji Sung Nam

1st Serve In %

60.7%

59.5%

1st Serve Points Won %

76.0%

66.8%

2nd Serve Points Won %

51.3%

48.7%

Return Points Won vs 1st Serve %

21.9%

32.2%

Return Points Won vs 2nd Serve %

46.7%

52.8%

Aces per Service Game

0.61

0.39

Double Faults per Service Game

0.22

0.32

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

1st Serve In %

58.8%

59.4%

1st Serve Points Won %

75.9%

72.1%

2nd Serve Points Won %

54.5%

46.0%

Return Points Won vs 1st Serve %

25.5%

29.5%

Return Points Won vs 2nd Serve %

40.8%

44.8%

Aces per Service Game

0.42

0.59

Double Faults per Service Game

0.39

0.24

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.

Rei Sakamoto Ji Sung Nam

Break Points Saved %

57.5%

63.0%

Break Points Converted %

34.6%

52.5%

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

Break Points Saved %

60.4%

54.0%

Break Points Converted %

45.0%

42.1%

Based on each player's last 10 Challenger matches.

Head-to-Head

Rei Sakamoto 0 – 0 Ji Sung Nam

Hard Shanghai challenger · 2026-09-08

1. round

Ji Sung Nam #1038

Rei Sakamoto #157

7-6 6-4

7 Aces 3

2 Double Faults 0

60 Service Points 66

30 First Serve In 41

24 First Serve Won 30

14 Second Serve Won 16

2 Break Points Saved 3

5 Break Points Faced 5

- Winners -

- Unforced Errors -

8.5 Average Odds 1.1

Rei Sakamoto vs Ji Sung Nam — Prediction