Johannus Monday vs Justin BoulaisPrediction, Head-to-Head Results, and Stats
Johannus Monday and Justin Boulais have met 1 time since 2026; Johannus Monday leads 1–0. Across all meetings Monday has taken 2 sets to Boulais's 1. Their most recent meeting: Johannus Monday won at Winnipeg Challenger (2026).
Spread & Straight-Sets Form
Completed best-of-3 matches · Last 12 months
| Indicator | Monday | Boulais | ||
|---|---|---|---|---|
| Indicator | Johannus Monday | Justin Boulais | ||
| Wins in straight sets | 59% | 20/34 | 78% | 28/36 |
| Wins a set when losing | 42% | 8/19 | 35% | 9/26 |
| Goes to a deciding set | 42% | 22/53 | 27% | 17/62 |
| Covers −1.5 sets as favorite | 44% | 19/43 | 56% | 15/27 |
| Covers +1.5 sets as underdog | 44% | 4/9 | 63% | 19/30 |
| Tiebreak sets won | 42% | 8/19 | 60% | 9/15 |
| Wins after taking set 1 | 87% | 26/30 | 81% | 29/36 |
| Wins 2-0 after taking set 1 | 67% | 20/30 | 78% | 28/36 |
Colored rows are higher-is-better: green above 50%, red below. Favorite/underdog set by book odds; cover rows count only matches with odds on record. Head-to-head: 0 of 1 completed meetings ended in straight sets (Monday 0, Boulais 0).
Style Matchup
Playing styles and historical archetype record
Monday
🤖 Servebot
Boulais
🧱 The Wall
Matchup analysis
The 🤖 Servebot archetype wins about 56% vs 🧱 The Wall across 386 matches in our dataset: a stylistic lean toward Johannus Monday.
Servebot players often use high ace rate and dominant service to pressure the the wall's elite returner.
Previous meetings
1 career meeting, newest first
Jul 21, 2026
Winnipeg Challenger
H Hard · 1st Round
Prop Research
Hit rates on common betting markets · Last 90 days
| Outcome | Monday | Boulais | ||
|---|---|---|---|---|
| Outcome | Johannus Monday | Justin Boulais | ||
| 1 or more | 100% | 16/16 | 100% | 10/10 |
| 3 or more | 88% | 14/16 | 50% | 5/10 |
| 5 or more | 75% | 12/16 | 30% | 3/10 |
| 10 or more | 19% | 3/16 | 0% | 0/10 |
| 15 or more | 13% | 2/16 | 0% | 0/10 |
| 20 or more | 6% | 1/16 | 0% | 0/10 |
Player ROI
Hypothetical if you put 1u on each player to win every one of their matches · Last 90 days
| Metric | Monday | Boulais |
|---|---|---|
| W-L | 10–8 | 4–8 |
| Avg odds | 1.66 | 2.29 |
| ROI % | -28.6% | -28.8% |
| Units P/L | -5.14u | -3.46u |
Travel
Last 30 days
| Metric | Monday | Boulais |
|---|---|---|
| Countries | 2 | 1 |
| Events | 4 | 1 |
| Matches | 7 | 1 |
| Distance | — | 0 mi · 0 km |
| Route | USA → GBR | CAN |
Host country from the tournament each match was played in, over the last 30 days. Route is the order of countries visited; consecutive stops in the same country are shown once. Distance is the great-circle total between host cities, shown only when every stop in the window is geocoded. A rough fatigue signal, not a headline stat.
Common opponents
Results vs. opponents both players faced · Last 12 months
Monday has a higher win rate against shared opponents (67% vs Boulais's 22%).
| Opponent | Monday | Boulais |
|---|---|---|
| Ozan Baris | L 62 36 46 | L 61 57 26 |
| Yuta Shimizu | W 46 63 63 | W 75 61 |
| Blaise Bicknell | L 76 46 46 | L 63 26 16 |
| Michael Mmoh | W 63 63 | L 61 16 26 |
| Andrew Fenty | L 67 46 | W 61 63 |
| Giles Hussey | W 61 62 | L 46 46 |
| Cannon Kingsley | W 64 67 61 | L 36 36 |
| Mats Rosenkranz | W 64 76 | L 16 46 |
| Alfredo Perez | W 75 63 | L 36 36 |
Recent Form
Last five matches per player
Michele Ribecai
Roehampton 2 Challenger · Quarterfinals
Aug 27
Lui Maxted
Roehampton 2 Challenger · 2nd Round
Aug 26
Iliyan Radulov
Roehampton 2 Challenger · 1st Round
Aug 24
Iliyan Radulov
Roehampton 1 Challenger · 1st Round
Aug 17
Patrick Maloney
M25 Southaven · 2nd Round
Aug 6
William Nolan
M25 Southaven · 1st Round
Aug 5
Ozan Baris
M25 Edwardsville · Semifinals
Aug 1
Andreja Petrovic
M25 Edwardsville · Quarterfinals
Jul 31
Benjamin Bonzi
Quebec City Challenger · 1st Round
Aug 19
Johannus Monday
Winnipeg Challenger · 1st Round
Jul 21
August Holmgren
Granby Challenger · Quarterfinals
Jul 17
Yuta Shimizu
Granby Challenger · 2nd Round
Jul 15
Zhizhen Zhang
Granby Challenger · 1st Round
Jul 13
Kenta Miyoshi
M25 Laval · 2nd Round
Jul 9
Millen Hurrion
M25 Laval · 1st Round
Jul 8
Tung-Lin Wu
Cary Challenger · 1st Round
Jun 30
Win rate
Matches, sets and games won · Last 12 months · 53–62 matches
| Metric | Monday | Boulais |
|---|---|---|
| Matches won | 64% | 58% |
| Sets won | 59% | 57% |
| Games won | 54% | 52% |
Record by tier
Head-to-head record by tournament tier
| Stage | Monday | Boulais |
|---|---|---|
| ATP Challenger Tour | 1 | 0 |
By surface
Head-to-head record per surface
| Surface | Monday | Boulais |
|---|---|---|
| Hard | 1 | 0 |
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