Adolfo Daniel Vallejo vs Thiago MonteiroPrediction, Head-to-Head Results, and Stats
Adolfo Daniel Vallejo and Thiago Monteiro have met 4 times since 2026; they are level 2–2. Their first meeting came at Itajai Challenger in 2026 on clay. On clay courts they are level 2–2. Across all meetings Vallejo has taken 5 sets to Monteiro's 6. Their most recent meeting: Thiago Monteiro won at Santiago Challenger (2026).
Spread & Straight-Sets Form
Completed best-of-3 matches · Last 12 months
| Indicator | Daniel Vallejo | Monteiro | ||
|---|---|---|---|---|
| Indicator | Adolfo Daniel Vallejo | Thiago Monteiro | ||
| Wins in straight sets | 70% | 46/66 | 64% | 16/25 |
| Wins a set when losing | 33% | 7/21 | 43% | 9/21 |
| Goes to a deciding set | 31% | 27/87 | 39% | 18/46 |
| Covers −1.5 sets as favorite | 45% | 13/29 | 41% | 12/29 |
| Covers +1.5 sets as underdog | 76% | 16/21 | 60% | 9/15 |
| Tiebreak sets won | 53% | 10/19 | 64% | 14/22 |
| Wins after taking set 1 | 93% | 57/61 | 80% | 20/25 |
| Wins 2-0 after taking set 1 | 75% | 46/61 | 64% | 16/25 |
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: 1 of 4 completed meetings ended in straight sets (Daniel Vallejo 0, Monteiro 1).
Style Matchup
Playing styles and historical archetype record
Vallejo
🪃 Counterpuncher
Monteiro
🎯 Baseliner
Matchup analysis
The 🎯 Baseliner archetype wins about 53% vs 🪃 Counterpuncher across 790 matches in our dataset: a stylistic lean toward Thiago Monteiro.
Baseliner players often use precise groundstrokes and court control to pressure the counterpuncher's elite bp conversion.
Previous meetings
4 career meetings, newest first
Mar 13, 2026
Santiago Challenger
C Clay · Quarterfinals
Feb 21, 2026
BCI Seguros Chile Open
C Clay · 1st Round Qualifying
Feb 14, 2026
Rio Open presented by Claro
C Clay · 1st Round Qualifying
Jan 23, 2026
Itajai Challenger
C Clay · Quarterfinals
Prop Research
Hit rates on common betting markets · Last 90 days
| Outcome | Vallejo | Monteiro | ||
|---|---|---|---|---|
| Outcome | Adolfo Daniel Vallejo | Thiago Monteiro | ||
| 1 or more | 92% | 12/13 | 100% | 5/5 |
| 3 or more | 46% | 6/13 | 100% | 5/5 |
| 5 or more | 23% | 3/13 | 60% | 3/5 |
| 10 or more | 0% | 0/13 | 0% | 0/5 |
| 15 or more | 0% | 0/13 | 0% | 0/5 |
| 20 or more | 0% | 0/13 | 0% | 0/5 |
Player ROI
Hypothetical if you put 1u on each player to win every one of their matches · Last 90 days
| Metric | Vallejo | Monteiro |
|---|---|---|
| W-L | 6–7 | 3–4 |
| Avg odds | 2.06 | 1.84 |
| ROI % | -20.5% | -20.0% |
| Units P/L | -2.66u | -1.40u |
Small sample: ROI stabilizes with more matches; fewer than 10 in the window is noisy.
Travel
Last 30 days
| Metric | Vallejo | Monteiro |
|---|---|---|
| Countries | 2 | 1 |
| Events | 3 | 1 |
| Matches | 5 | 1 |
| Distance | 1,024 mi · 1,648 km | 0 mi · 0 km |
| Route | CAN → USA | GER |
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
Vallejo has a higher win rate against shared opponents (80% vs Monteiro's 50%).
| Opponent | Vallejo | Monteiro |
|---|---|---|
| Luciano Darderi | L 46 76 36 | L 57 26 |
| Miguel Damas | W 63 63 | W 64 75 |
| Juan Carlos Prado Angelo | W 62 64 | L 67 16 |
| Henrique Rocha | W 61 46 62 | L 06 76 36 |
| Pedro Sakamoto | W 61 76 | W 64 46 64 |
| Genaro Alberto Olivieri | L 36 26 | L 63 46 57 |
| Facundo Diaz Acosta | W 76 63 | W 64 64 |
| Pedro Boscardin Dias | W 62 64 | W 61 62 |
| Joao Eduardo Schiessl | W 64 62 | W 62 62 |
| Tomas Barrios Vera | W 63 16 64 | L 26 57 |
Recent Form
Last five matches per player
Botic van de Zandschulp
Winston-Salem Open - Winston-Salem · 2nd Round
Aug 25
Tommy Paul
Cincinnati Open - Cincinnati · 3rd Round
Aug 18
Valentin Vacherot
Cincinnati Open - Cincinnati · 2nd Round
Aug 15
Kyrian Jacquet
Cincinnati Open - Cincinnati · 1st Round
Aug 14
Juncheng Shang
National Bank Open - Montreal · 1st Round
Aug 2
Kilian Feldbausch
Generali Open - Kitzbuhel · 1st Round
Jul 21
Luciano Darderi
Nordea Open - Bastad · Semifinals
Jul 18
Stefano Travaglia
Nordea Open - Bastad · Quarterfinals
Jul 17
Tom Gentzsch
Hagen Challenger · 1st Round
Aug 4
Vilius Gaubas
San Marino Challenger · Quarterfinals
Jul 31
Andrea Pellegrino
San Marino Challenger · 2nd Round
Jul 30
David Jorda Sanchis
San Marino Challenger · 1st Round
Jul 28
Philip Henning
Zug Challenger · 1st Round
Jul 21
Dylan Dietrich
Gstaad
Jul 12
Pierre-Hugues Herbert
Gstaad
Jul 11
Pol Martin Tiffon
Istanbul Challenger · 2nd Round
May 21
Rivalry momentum
Cumulative head-to-head lead over time
Win rate
Matches, sets and games won · Last 12 months · 46–89 matches
| Metric | Vallejo | Monteiro |
|---|---|---|
| Matches won | 74% | 54% |
| Sets won | 68% | 54% |
| Games won | 57% | 51% |
Record by tier
Head-to-head record by tournament tier
| Stage | Vallejo | Monteiro |
|---|---|---|
| ATP 500 | 0 | 1 |
| ATP 250 | 1 | 0 |
| ATP Challenger Tour | 1 | 1 |
By surface
Head-to-head record per surface
| Surface | Vallejo | Monteiro |
|---|---|---|
| Clay | 2 | 2 |
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