ATP Challenger Tour · Round of 32 · Athens
Final score & match stats
Playing styles and historical archetype record
Hernando
⚔️ The Gladiator
Wallin
💥 Big Hitter
Matchup analysis
The 💥 Big Hitter archetype wins about 56% vs ⚔️ The Gladiator across 2,688 matches in our dataset. That is a small stylistic lean for Olle Wallin here.
Big Hitter players often use power groundstrokes and high winner count to pressure the the gladiator's physical intensity. On Hard, that can swing with conditions.
Hypothetical if you put 1u on each player to win every one of their matches · Last 90 days
| Metric | Hernando | Wallin |
|---|---|---|
| W-L | 4–3 | 0–1 |
| Avg odds | 2.14 | 1.77 |
| ROI % | +25.0% | -100.0% |
| Units P/L | +1.75u | -1.00u |
Small sample: ROI stabilizes with more matches; fewer than 10 in the window is noisy.
Prior meetings and scores · 1 career meeting
1
Hernando
0
Wallin
Results vs. opponents both players faced · Last 12 months
Hernando has a higher win rate against shared opponents (100% vs Wallin's 0%).
| Opponent | Hernando | Wallin |
|---|---|---|
| Dali Blanch | W 46 75 62 | L 36 63 67 |
Serve and return comparison · Last 90 days
| Stat | Hernando | Wallin |
|---|---|---|
| Serve | ||
| 1st Serve In % | 61.7% | 71.1% |
| 1st Serve Pts Won % | 56.2% | 64.4% |
| 2nd Serve Pts Won % | 39% | 45.8% |
| Aces / Match | 1 | 10 |
| Double Faults / Match | 3.6 | 2 |
| Break Points Saved % | 57.3% | 66.7% |
| Return | ||
| 1st Return Pts Won % | 39.6% | 34.1% |
| 2nd Return Pts Won % | 51.2% | 60.6% |
| BP Converted % | 60.2% | 40% |
| Rally | ||
| Winners / Match | 20.8 | 19 |
| Unforced Errors / Match | 48 | 23 |
| Net Pts Won % | 78.3% | 75% |
| Total Pts Won % | 47.2% | 52.9% |
| Surface (Hard) | ||
| Hard Win % | 0% | 0% |
Last five matches per player
Federico Arnaboldi
Internazionali Di Tennis - Citta'Di Vicenza · 1st Round Qualifying
May 24
Giorgio Tabacco
CAME CUP 2026 CITTA' DI CERVIA · 1st Round Qualifying
May 17
Daniel Rincon
Open Menorca · Quarterfinals
Apr 3
Andrew Paulson
Open Menorca · Round of 16
Apr 3
Zdenek Kolar
Open Menorca · Round of 32
Apr 1
Matchup overview
Sergio Callejon Hernando and Olle Wallin face off in the Round of 32 at Athens on Hard.
Sergio Callejon Hernando leads 1-0 over 1 previous meeting.
Sergio Callejon Hernando is 2-3 over the last 5 matches. Latest result: L vs Federico Arnaboldi (May 24).
Olle Wallin is 0-5 over the last 5 matches. Latest result: L vs Giovanni Oradini (May 17).
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