ATP Challenger Tour · Quarterfinals · Challenger de Santiago - Dove Men Care
Final score & match stats
Playing styles and historical archetype record
Monteiro
🏹 Frontrunner
Vallejo
🧱 The Wall
Matchup analysis
The 🏹 Frontrunner archetype wins about 63% vs 🧱 The Wall across 366 matches in our dataset. That is a small stylistic lean for Thiago Monteiro here.
Frontrunner players often use fast starts and aggressive openers to pressure the the wall's elite returner. On Clay, that can swing with conditions.
Hypothetical if you put 1u on each player to win every one of their matches · Last 90 days
| Metric | Monteiro | Vallejo |
|---|---|---|
| W-L | 4–2 | 9–5 |
| Avg odds | 1.59 | 1.92 |
| ROI % | +8.3% | +5.6% |
| Units P/L | +0.50u | +0.79u |
Small sample: ROI stabilizes with more matches; fewer than 10 in the window is noisy.
Prior meetings and scores · 4 career meetings
2
Monteiro
2
Vallejo
Mar 13, 2026
Challenger de Santiago - Dove Men Care
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 Open
C Clay · Quarterfinals
Results vs. opponents both players faced · Last 12 months
Vallejo has a higher win rate against shared opponents (78% vs Monteiro's 44%).
| Opponent | Monteiro | Vallejo |
|---|---|---|
| Henrique Rocha | L 06 76 36 | W 61 46 62 |
| Genaro Alberto Olivieri | L 63 46 57 | L 36 26 |
| Pedro Boscardin Dias | W 61 62 | W 62 64 |
| Facundo Diaz Acosta | W 64 64 | W 76 63 |
| Joao Eduardo Schiessl | W 62 62 | W 64 62 |
| Facundo Mena | L 57 67 | W 61 62 |
| Tomas Barrios Vera | L 26 57 | W 63 16 64 |
| Marco Cecchinato | W 76 76 | W 61 60 |
| Roman Andres Burruchaga | L 46 76 06 | L 16 26 |
Serve and return comparison · Last 90 days
| Stat | Monteiro | Vallejo |
|---|---|---|
| Serve | ||
| 1st Serve In % | 61.5% | 64.4% |
| 1st Serve Pts Won % | 68% | 67.1% |
| 2nd Serve Pts Won % | 52.7% | 51.4% |
| Aces / Match | 4.8 | 2.6 |
| Double Faults / Match | 3.7 | 2.5 |
| Break Points Saved % | 47.7% | 53.5% |
| Return | ||
| 1st Return Pts Won % | 37% | 33.5% |
| 2nd Return Pts Won % | 53.6% | 53.8% |
| BP Converted % | 42.8% | 47.3% |
| Rally | ||
| Winners / Match | 22.5 | 24.5 |
| Unforced Errors / Match | 32.2 | 25.3 |
| Net Pts Won % | 77% | 72.2% |
| Total Pts Won % | 52.4% | 51.6% |
| Surface (Clay) | ||
| Clay Win % | 67% | 67% |
Last five matches per player
Franco Agamenone
Bosphorus Challenger Cup · Quarterfinals
May 21
Alejo Sanchez Quilez
Bosphorus Challenger Cup · Round of 32
May 19
Pol Martin Tiffon
Bosphorus Challenger Cup · Round of 16
May 13
Andy Andrade
Zagreb Open · Round of 32
May 13
Andrej Nedic
Zagreb Open · 2nd Round Qualifying
May 11
Matchup overview
Thiago Monteiro and Adolfo Daniel Vallejo face off in the Quarterfinals at Challenger de Santiago - Dove Men Care on Clay.
Thiago Monteiro leads 2-2 over 4 previous meetings.
Thiago Monteiro is 3-2 over the last 5 matches. Latest result: L vs Franco Agamenone (May 21).
Adolfo Daniel Vallejo is 3-2 over the last 5 matches. Latest result: L vs Moise Kouame (May 27).
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