ATP tennis predict — Christopher Papa vs Sam Ryan Ziegann

Challenger Hard Phan Thiet 3 challenger · qualification - 1. round 08:30

Predicted probability

Christopher Papa

USA

80.43%

Sam Ryan Ziegann

Australia

19.57%

Average Odds

1.59 / 2.23

Market probability

58.38% / 41.62%

Why This Prediction?

Christopher Papa is the favorite because he has a higher Elo rating (1406 vs 1321), a higher Elo rating on hard courts (1501 vs 1377) and more career match wins (6 vs 1).

Player Comparison

1405.8 Elo 1320.7

1501.2 Elo (surface) 1377.2

6 Wins (Challenger) 1

5 Wins (surface) 1

6 Last 15 form 1

0 Head-to-head wins 0

1.058 Dominance ratio 0.802

1054 Rank 820

None Age 28.1

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.

Christopher Papa

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

Favorite (odds 1.30-1.80) 0W–1L · 0.0%

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

Underdog (odds 2.20-4.00) 1W–3L · 25.0%

Heavy underdog (odds above 4.00) 0W–1L · 0.0%

6 matches with market odds since 2026-07-05.

Sam Ryan Ziegann

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

Favorite (odds 1.30-1.80) 0W–0L · 0.0%

Even match (odds 1.80-2.20) 2W–0L · 100.0%

Underdog (odds 2.20-4.00) 1W–3L · 25.0%

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

6 matches with market odds since 2026-07-05.

Serve & Return

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

Christopher Papa Sam Ryan Ziegann

Not enough ATP/Grand Slam match history yet.

1st Serve In %

59.6%

62.0%

1st Serve Points Won %

71.1%

66.6%

2nd Serve Points Won %

54.6%

48.7%

Return Points Won vs 1st Serve %

31.0%

27.9%

Return Points Won vs 2nd Serve %

47.8%

40.9%

Aces per Service Game

0.39

0.52

Double Faults per Service Game

0.20

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.

Christopher Papa Sam Ryan Ziegann

Not enough ATP/Grand Slam match history yet.

Break Points Saved %

68.4%

56.1%

Break Points Converted %

35.1%

31.1%

Based on each player's last 10 Challenger matches.

Head-to-Head

Christopher Papa 0 – 0 Sam Ryan Ziegann

Hard Phan Thiet 3 challenger · 2026-09-06

qualification - 1. round

Sam Ryan Ziegann #820

Christopher Papa #1054

6-1 6-4

4 Aces 6

2 Double Faults 3

45 Service Points 57

24 First Serve In 35

13 First Serve Won 25

11 Second Serve Won 13

3 Break Points Saved 2

7 Break Points Faced 3

- Winners -

- Unforced Errors -

2.2 Average Odds 1.6

Christopher Papa vs Sam Ryan Ziegann — Prediction