Tulln CH · F · Clay · 10 Sep 2022
Jozef Kovalik v Jelle Sels
90–83 in points · Jozef Kovalik won
Why it went the way it did
Jozef Kovalik won 5.9 more points than Jelle Sels relative to what the serve alone predicted. Jelle Sels's biggest leaks: forehand execution −8.3, slice shot selection −3.5, touch execution −2.6.
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 | Jozef Kovalik | Jelle Sels | ||||||
|---|---|---|---|---|---|---|---|---|
| Dir | Sel | Exec | Total | Dir | Sel | Exec | Total | |
| Serve 1st | +0.1 | −0.2 | −1.0 | −1.0 | −0.1 | ±0.0 | −1.3 | −1.4 |
| Serve 2nd | ±0.0 | ±0.0 | +1.0 | +0.9 | ±0.0 | ±0.0 | +0.8 | +0.8 |
| Return | −0.4 | −0.9 | −2.1 | −3.5 | −0.2 | −1.9 | −1.5 | −3.5 |
| Forehand | −0.2 | +4.5 | −1.9 | +2.4 | −0.4 | +5.1 | −8.3 | −3.6 |
| Backhand | −0.2 | +0.1 | −3.2 | −3.2 | −0.2 | −0.7 | +1.2 | +0.4 |
| Slice | +0.3 | −4.1 | +0.4 | −3.4 | ±0.0 | −3.5 | −0.3 | −3.8 |
| Net | +0.2 | +0.1 | +0.4 | +0.7 | +0.2 | +0.3 | +0.8 | +1.3 |
| Touch | −0.1 | −0.2 | +0.1 | −0.3 | −0.3 | −0.6 | −2.6 | −3.5 |
| Other | ±0.0 | −1.2 | +0.4 | −0.8 | −0.2 | −0.7 | +0.1 | −0.8 |
| All shots | −0.4 | −2.0 | −5.9 | −8.3 | −1.2 | −2.1 | −10.9 | −14.2 |
Set by set
| Set | Jozef Kovalik | Jelle Sels | Net, Jozef | |
|---|---|---|---|---|
| 1 | −5.8 | −9.8 | +4.0 | |
| 2 | −2.5 | −4.4 | +1.9 |
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.
Jozef Kovalik serving
| Set | Wide | Body | T |
|---|---|---|---|
| 1 | 47% 65% | 7% 100% | 47% 65% |
| 2 | 43% 73% | 3% 100% | 54% 68% |
Set to set ±0.00 per 100 first serves in sets 2+
Within sets +0.05 per 100 first serves, every two to three service games
Jelle Sels serving
| Set | Wide | Body | T |
|---|---|---|---|
| 1 | 51% 57% | 16% 67% | 33% 56% |
| 2 | 53% 65% | 11% 75% | 37% 64% |
Set to set +0.15 per 100 first serves in sets 2+
Within sets −0.19 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.
Jozef Kovalik
8.8 points left on the table across 363 shots 2.43 per 100 shots
- Return of a 1st serve, T, ad court hit FH crosscourt ×2; FH inside-in rates higher · 0.39 pts
- Rally, shots 5–8: drive to your forehand side hit FH through the middle ×7; FH crosscourt rates higher · 0.36 pts
- Rally, shots 5–8: drive to your forehand side, you at net hit FH volley through the middle ×1; FH volley crosscourt rates higher · 0.28 pts
- Long rally, 9+: drive to your middle hit FH through the middle ×5; FH crosscourt rates higher · 0.27 pts
Jelle Sels
10.8 points left on the table across 363 shots 2.97 per 100 shots
- Return of a 1st serve, T, ad court hit FH down the line ×3; FH inside-in rates higher · 0.55 pts
- Return of a 1st serve, T, ad court hit FH through the middle ×3; FH inside-in rates higher · 0.49 pts
- Serve +1: mid-depth return to your middle hit FH through the middle ×5; FH crosscourt rates higher · 0.43 pts
- Long rally, 9+: drive to your backhand side hit BH through the middle ×10; BH crosscourt rates higher · 0.42 pts