Gray Voelzke vs Stian KlaassenPrediction, Head-to-Head Results, and Stats
Gray Voelzke and Stian Klaassen have met 1 time since 2026; Stian Klaassen leads 1–0. Across all meetings Voelzke has taken 0 sets to Klaassen's 2. Their most recent meeting: Stian Klaassen won at M25 Oldenzaal (2026).
Spread & Straight-Sets Form
Completed best-of-3 matches · Last 12 months
| Indicator | Voelzke | Klaassen | ||
|---|---|---|---|---|
| Indicator | Gray Voelzke | Stian Klaassen | ||
| Wins in straight sets | 50% | 3/6 | 86% | 6/7 |
| Wins a set when losing | 42% | 8/19 | 38% | 3/8 |
| Goes to a deciding set | 44% | 11/25 | 27% | 4/15 |
| Covers −1.5 sets as favorite | 33% | 1/3 | 63% | 5/8 |
| Covers +1.5 sets as underdog | 50% | 9/18 | 67% | 4/6 |
| Tiebreak sets won | 57% | 8/14 | 50% | 1/2 |
| Wins after taking set 1 | 63% | 5/8 | 78% | 7/9 |
| Wins 2-0 after taking set 1 | 38% | 3/8 | 67% | 6/9 |
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 1 completed meetings ended in straight sets (Voelzke 0, Klaassen 1).
Style Matchup
Playing styles and historical archetype record
Voelzke
🎯 Baseliner
Klaassen
⚙️ Grinder
Matchup analysis
The 🎯 Baseliner archetype wins about 56% vs ⚙️ Grinder across 460 matches in our dataset: a stylistic lean toward Gray Voelzke.
Baseliner players often use precise groundstrokes and court control to pressure the grinder's relentless consistency.
Previous meetings
1 career meeting, newest first
Aug 26, 2026
M25 Oldenzaal
C Clay · 1st Round
Prop Research
Hit rates on common betting markets · Last 90 days
| Outcome | Voelzke | Klaassen | ||
|---|---|---|---|---|
| Outcome | Gray Voelzke | Stian Klaassen | ||
| 1 or more | 100% | 6/6 | 85% | 11/13 |
| 3 or more | 100% | 6/6 | 69% | 9/13 |
| 5 or more | 67% | 4/6 | 39% | 5/13 |
| 10 or more | 50% | 3/6 | 8% | 1/13 |
| 15 or more | 0% | 0/6 | 0% | 0/13 |
| 20 or more | 0% | 0/6 | 0% | 0/13 |
Player ROI
Hypothetical if you put 1u on each player to win every one of their matches · Last 90 days
| Metric | Voelzke | Klaassen |
|---|---|---|
| W-L | 1–6 | 7–7 |
| Avg odds | 3.43 | 1.94 |
| ROI % | -62.0% | -19.0% |
| Units P/L | -4.34u | -2.66u |
Small sample: ROI stabilizes with more matches; fewer than 10 in the window is noisy.
Travel
Last 30 days
| Metric | Voelzke | Klaassen |
|---|---|---|
| Countries | 1 | 3 |
| Events | 1 | 4 |
| Matches | 1 | 6 |
| Distance | — | — |
| Route | NED | BEL → FIN → BEL → NED |
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.
Recent Form
Last five matches per player
Stian Klaassen
M25 Oldenzaal · 1st Round
Aug 26
Rafael De Alba
M15 Huamantla · 1st Round
Jul 28
Preston Brown
M15 Huamantla · 2nd Round
Jul 23
Eugenio Gonzalez Fitzmaurice
M15 Huamantla · 1st Round
Jul 22
Jeffrey Strydom
Futures 2026
Jul 12
Kris Van Wyk
M15 Hillcrest · 1st Round
Jun 30
Yuya Hirose
M15 Harmon · Round of 32
Jun 3
Yuya Hirose
M15 Harmon · 1st Round
Jun 2
Emilien Demanet
M25 Oldenzaal · 2nd Round
Aug 27
Gray Voelzke
M25 Oldenzaal · 1st Round
Aug 26
Noah Schlagenhauf
M15 Lambermont · 1st Round
Aug 19
Arvid Nordquist
M15 Turku · 1st Round
Aug 11
Benoit Torcq
M15 Eupen · 2nd Round
Aug 6
Marlon Vankan
M15 Eupen · 1st Round
Aug 5
Spencer Johnson
M15 Rancho Santa Fe · Semifinals
Jul 11
Jack Anthrop
M15 Rancho Santa Fe · Quarterfinals
Jul 10
Win rate
Matches, sets and games won · Last 12 months · 15–25 matches
| Metric | Voelzke | Klaassen |
|---|---|---|
| Matches won | 24% | 47% |
| Sets won | 33% | 50% |
| Games won | 44% | 50% |
Record by tier
Head-to-head record by tournament tier
| Stage | Voelzke | Klaassen |
|---|---|---|
| ITF M25 | 0 | 1 |
By surface
Head-to-head record per surface
| Surface | Voelzke | Klaassen |
|---|---|---|
| Clay | 0 | 1 |
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