Spencer Johnson vs Stian KlaassenPrediction, Head-to-Head Results, and Stats
Spencer Johnson and Stian Klaassen have met 1 time since 2026; Spencer Johnson leads 1–0. Across all meetings Johnson has taken 2 sets to Klaassen's 0. Their most recent meeting: Spencer Johnson won at M15 Rancho Santa Fe (2026).
Spread & Straight-Sets Form
Completed best-of-3 matches · Last 12 months
| Indicator | Johnson | Klaassen | ||
|---|---|---|---|---|
| Indicator | Spencer Johnson | Stian Klaassen | ||
| Wins in straight sets | 82% | 32/39 | 89% | 8/9 |
| Wins a set when losing | 45% | 5/11 | 38% | 3/8 |
| Goes to a deciding set | 24% | 12/50 | 24% | 4/17 |
| Covers −1.5 sets as favorite | 66% | 27/41 | 63% | 5/8 |
| Covers +1.5 sets as underdog | 80% | 4/5 | 71% | 5/7 |
| Tiebreak sets won | 63% | 17/27 | 50% | 1/2 |
| Wins after taking set 1 | 95% | 37/39 | 82% | 9/11 |
| Wins 2-0 after taking set 1 | 82% | 32/39 | 73% | 8/11 |
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 (Johnson 1, Klaassen 0).
Style Matchup
Playing styles and historical archetype record
Johnson
💥 Big Hitter
Klaassen
⚙️ Grinder
Matchup analysis
The 💥 Big Hitter archetype wins about 55% vs ⚙️ Grinder across 682 matches in our dataset: a stylistic lean toward Spencer Johnson.
Big Hitter players often use power groundstrokes and high winner count to pressure the grinder's relentless consistency.
Previous meetings
1 career meeting, newest first
Jul 11, 2026
M15 Rancho Santa Fe
H Hard · Semifinals
Prop Research
Hit rates on common betting markets · Last 90 days
| Outcome | Johnson | Klaassen | ||
|---|---|---|---|---|
| Outcome | Spencer Johnson | Stian Klaassen | ||
| 1 or more | 92% | 12/13 | 83% | 5/6 |
| 3 or more | 85% | 11/13 | 67% | 4/6 |
| 5 or more | 85% | 11/13 | 50% | 3/6 |
| 10 or more | 15% | 2/13 | 0% | 0/6 |
| 15 or more | 8% | 1/13 | 0% | 0/6 |
| 20 or more | 0% | 0/13 | 0% | 0/6 |
Player ROI
Hypothetical if you put 1u on each player to win every one of their matches · Last 90 days
| Metric | Johnson | Klaassen |
|---|---|---|
| W-L | 9–6 | 3–4 |
| Avg odds | 1.54 | 1.71 |
| ROI % | -10.8% | -37.7% |
| Units P/L | -1.62u | -2.64u |
Small sample: ROI stabilizes with more matches; fewer than 10 in the window is noisy.
Travel
Last 30 days
| Metric | Johnson | Klaassen |
|---|---|---|
| Countries | 1 | — |
| Events | 1 | — |
| Matches | 3 | — |
| Distance | 0 mi · 0 km | — |
| Route | USA | — |
Host country from each tournament in the last 30 days, including the current event even when a player arrived on a bye. 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
Johnson has a higher win rate against shared opponents (100% vs Klaassen's 50%).
| Opponent | Johnson | Klaassen |
|---|---|---|
| Vignesh Gogineni | W 61 67 61 | L 62 36 26 |
| Nile Ung | W 64 62 | W 60 61 |
| Noah Zamora | W 76 75 | L 36 46 |
| Theodore Dean | W 61 76 | W 63 64 |
Recent Form
Last five matches per player
Tristan Boyer
San Diego 2 Challenger · 1st Round
Sep 22
Jakub Vrba
San Diego 2 Challenger · 3rd Round Qualifying
Sep 21
Jan Kobierski
San Diego 2 Challenger · 1st Round Qualifying
Sep 20
Erik Arutiunian
Tiburon Challenger · 3rd Round Qualifying
Sep 14
Vignesh Gogineni
Tiburon Challenger · 1st Round Qualifying
Sep 13
Cristian Garin
U.S. Open - New York · 1st Round Qualifying
Aug 24
Andre Ilagan
Lexington Challenger · Semifinals
Aug 8
Jay Dylan Hara Friend
Lexington Challenger · 2nd Round
Aug 7
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
Bjorn Schoemacher
M15 Eupen · 3rd Round Qualifying
Aug 4
Christopher Patzanovsky
M15 Eupen · 2nd Round Qualifying
Aug 3
Win rate
Matches, sets and games won · Last 12 months · 17–50 matches
| Metric | Johnson | Klaassen |
|---|---|---|
| Matches won | 78% | 53% |
| Sets won | 74% | 55% |
| Games won | 58% | 52% |
Record by tier
Head-to-head record by tournament tier
| Stage | Johnson | Klaassen |
|---|---|---|
| ITF M15 | 1 | 0 |
By surface
Head-to-head record per surface
| Surface | Johnson | Klaassen |
|---|---|---|
| Hard | 1 | 0 |
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