New York · F · Hard · 17 Feb 2019
Reilly Opelka v Brayden Schnur
108–90 in points · Reilly Opelka won
Why it went the way it did
Reilly Opelka won 10.7 more points than Brayden Schnur relative to what the serve alone predicted. Brayden Schnur's biggest leaks: forehand execution −3.2, slice shot selection −2.1, return execution −1.6.
Each shot moves its hitter's chance of winning the point. Those moves are split into direction choice, shot selection and execution, and summed here. Read both columns together: one player's gain is the other's loss.
| Shot | Reilly Opelka | Brayden Schnur | ||||||
|---|---|---|---|---|---|---|---|---|
| Dir | Sel | Exec | Total | Dir | Sel | Exec | Total | |
| Serve 1st | +0.2 | −0.2 | +12.8 | +12.8 | ±0.0 | −0.2 | +0.2 | ±0.0 |
| Serve 2nd | +0.1 | ±0.0 | +1.0 | +1.0 | +0.1 | ±0.0 | +0.6 | +0.7 |
| Return | +0.1 | +0.4 | −0.4 | ±0.0 | −0.1 | ±0.0 | −1.6 | −1.8 |
| Forehand | +0.2 | +2.3 | −3.8 | −1.3 | −0.6 | +3.2 | −3.2 | −0.6 |
| Backhand | ±0.0 | +0.8 | −4.8 | −4.0 | ±0.0 | +0.5 | −0.9 | −0.4 |
| Slice | ±0.0 | −1.7 | +0.2 | −1.5 | −0.1 | −2.1 | −0.8 | −3.1 |
| Net | ±0.0 | ±0.0 | −0.1 | −0.1 | ±0.0 | +0.1 | +1.7 | +1.7 |
| Touch | +0.1 | −0.7 | +0.6 | ±0.0 | ±0.0 | +0.1 | −0.5 | −0.4 |
| All shots | +0.5 | +0.9 | +5.5 | +6.9 | −0.7 | +1.5 | −4.7 | −3.8 |
Set by set
| Set | Reilly Opelka | Brayden Schnur | Net, Reilly | |
|---|---|---|---|---|
| 1 | +4.1 | −3.4 | +7.4 | |
| 2 | +1.1 | ±0.0 | +1.1 | |
| 3 | +1.7 | −0.5 | +2.2 |
Adaptation
First-serve direction mix set by set, with the share of points each direction won. The scores measure whether the server moved toward the directions that had been winning earlier in this match, set to set and every two to three service games, in points per 100 first serves. Read them as a habit, not a gain: across the tour, a direction's edge in early sets barely predicts the later ones. Whether the returner responded can't be told apart from noise within one match.
Reilly Opelka serving
| Set | Wide | Body | T |
|---|---|---|---|
| 1 | 68% 85% | – | 32% 83% |
| 2 | 45% 71% | 8% 67% | 47% 89% |
| 3 | 56% 75% | 3% 100% | 42% 87% |
Set to set −0.09 per 100 first serves in sets 2+
Within sets −0.39 per 100 first serves, every two to three service games
Brayden Schnur serving
| Set | Wide | Body | T |
|---|---|---|---|
| 1 | 67% 40% | 20% 33% | 13% 50% |
| 2 | 53% 69% | 10% 20% | 37% 94% |
| 3 | 66% 70% | 2% 100% | 32% 77% |
Set to set +1.38 per 100 first serves in sets 2+
Within sets +1.26 per 100 first serves, every two to three service games
Counterfactual: the best direction every time
If each shot had gone in the direction that is usually worth most for that stroke and position, this is how many more points each player would expect to win. It's an upper bound: the best direction isn't always on, and the chart can't see the ball's pace or position.
Reilly Opelka
5.4 points left on the table across 228 shots 2.39 per 100 shots
- Return of a 2nd serve, wide, ad court hit BH through the middle ×7; BH crosscourt rates higher · 0.39 pts
- Return of a 1st serve, wide, deuce court hit FH down the line ×4; FH crosscourt rates higher · 0.28 pts
- Rally, shots 5–8: drive to your backhand side, you at net hit BH volley through the middle ×1; BH volley crosscourt rates higher · 0.26 pts
- Serve +1: deep return to your middle hit FH through the middle ×3; FH crosscourt rates higher · 0.22 pts
Brayden Schnur
6.0 points left on the table across 183 shots 3.28 per 100 shots
- Serve +1: mid-depth return to your middle hit FH through the middle ×4; FH crosscourt rates higher · 0.35 pts
- Serve +1: deep return to your middle hit FH down the line ×10; FH crosscourt rates higher · 0.33 pts
- Rally, shots 5–8: drive to your forehand side, you at net hit FH volley down the line ×2; FH volley crosscourt rates higher · 0.28 pts
- Long rally, 9+: drive to your forehand side, you at net hit FH volley through the middle ×1; FH volley crosscourt rates higher · 0.26 pts