ATP tennis predict — Justin Boulais vs Johannus Monday

Challenger Hard Winnipeg challenger · 1. round

Predicted probability

Justin Boulais

Canada

54.04%

Johannus Monday

Great Britain

45.96%

Average Odds

2.13 / 1.66

Market probability

43.80% / 56.20%

Why This Prediction?

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

Player Comparison

1582.9 Elo 1515.6

1584.8 Elo (surface) 1484.3

45 Wins (Challenger) 43

45 Wins (surface) 38

10 Last 15 form 10

0 Head-to-head wins 0

0.862 Dominance ratio 1.176

393 Rank 315

24.8 Age 24.5

left Hand left

Performance vs. the Odds

Career record grouped by how big a favorite the market made each player, based on their average odds.

Justin Boulais

Heavy favorite (odds below 1.30) 2W–2L · 50.0%

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

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

Underdog (odds 2.20-4.00) 3W–6L · 33.3%

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

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

Johannus Monday

Heavy favorite (odds below 1.30) 3W–1L · 75.0%

Favorite (odds 1.30-1.80) 6W–3L · 66.7%

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

Underdog (odds 2.20-4.00) 0W–3L · 0.0%

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

16 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.

Justin Boulais Johannus Monday

1st Serve In %

56.4%

60.4%

1st Serve Points Won %

60.0%

74.1%

2nd Serve Points Won %

47.1%

51.9%

Return Points Won vs 1st Serve %

21.9%

20.5%

Return Points Won vs 2nd Serve %

43.6%

41.1%

Aces per Service Game

0.33

0.69

Double Faults per Service Game

0.56

0.19

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

1st Serve In %

60.2%

64.0%

1st Serve Points Won %

70.8%

76.7%

2nd Serve Points Won %

50.3%

54.8%

Return Points Won vs 1st Serve %

34.2%

31.3%

Return Points Won vs 2nd Serve %

51.6%

50.9%

Aces per Service Game

0.26

0.62

Double Faults per Service Game

0.42

0.31

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.

Justin Boulais Johannus Monday

Break Points Saved %

57.7%

58.0%

Break Points Converted %

16.7%

50.0%

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

Break Points Saved %

54.4%

69.8%

Break Points Converted %

46.8%

42.2%

Based on each player's last 10 Challenger matches.

Head-to-Head

Justin Boulais 0 – 0 Johannus Monday

Hard Winnipeg challenger · 2026-07-21

1. round

Johannus Monday #315

Justin Boulais #393

5-7 6-2 7-5

5 Aces 1

13 Double Faults 8

111 Service Points 112

59 First Serve In 75

40 First Serve Won 52

23 Second Serve Won 16

13 Break Points Saved 5

18 Break Points Faced 8

- Winners -

- Unforced Errors -

1.7 Average Odds 2.1

Justin Boulais vs Johannus Monday — Prediction