Great Ocean Road Open · R64 · Hard · 2 Feb 2021
Tristan Schoolkate v Botic Van De Zandschulp
66–73 in points · Botic Van De Zandschulp won
Why it went the way it did
Botic Van De Zandschulp won 2.1 more points than Tristan Schoolkate relative to what the serve alone predicted. Tristan Schoolkate's biggest leaks: forehand execution −5.4, serve 2nd execution −3.2, return execution −3.2.
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 | Tristan Schoolkate | Botic Van De Zandschulp | ||||||
|---|---|---|---|---|---|---|---|---|
| Dir | Sel | Exec | Total | Dir | Sel | Exec | Total | |
| Serve 1st | +0.2 | +0.2 | −2.9 | −2.4 | −0.2 | −0.1 | −1.4 | −1.7 |
| Serve 2nd | +0.1 | ±0.0 | −3.2 | −3.2 | ±0.0 | ±0.0 | −1.7 | −1.7 |
| Return | −0.3 | −0.7 | −3.2 | −4.1 | +0.2 | −0.1 | −3.0 | −2.9 |
| Forehand | +0.1 | +2.0 | −5.4 | −3.3 | −0.4 | +1.2 | −3.1 | −2.3 |
| Backhand | −0.1 | +0.2 | −0.3 | −0.2 | −0.1 | +0.2 | +0.5 | +0.7 |
| Slice | −0.2 | −0.9 | −0.2 | −1.2 | ±0.0 | −2.1 | ±0.0 | −2.0 |
| Net | −0.1 | +0.1 | −1.1 | −1.1 | +0.2 | −0.1 | −2.1 | −2.1 |
| Touch | ±0.0 | −0.2 | +0.9 | +0.8 | +0.1 | −0.4 | −1.2 | −1.5 |
| Other | ±0.0 | −0.1 | −0.8 | −1.0 | −0.1 | −0.2 | +0.3 | ±0.0 |
| All shots | −0.2 | +0.6 | −16.0 | −15.6 | −0.3 | −1.5 | −11.7 | −13.5 |
Set by set
| Set | Tristan Schoolkate | Botic Van De Zandschulp | Net, Tristan | |
|---|---|---|---|---|
| 1 | −6.1 | −3.4 | −2.6 | |
| 2 | −9.6 | −10.1 | +0.5 |
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.
Tristan Schoolkate serving
| Set | Wide | Body | T |
|---|---|---|---|
| 1 | 48% 69% | 4% 0% | 48% 69% |
| 2 | 44% 59% | 3% 100% | 54% 48% |
Within sets −0.11 per 100 first serves, every two to three service games
Botic Van De Zandschulp serving
| Set | Wide | Body | T |
|---|---|---|---|
| 1 | 35% 89% | 15% 25% | 50% 85% |
| 2 | 27% 42% | 18% 63% | 56% 56% |
Within sets +1.08 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.
Tristan Schoolkate
4.7 points left on the table across 172 shots 2.71 per 100 shots
- Rally, shots 5–8: lob to your middle, you at net hit Smash through the middle ×2; Smash crosscourt rates higher · 0.38 pts
- Rally, shots 5–8: drive to your forehand side, opponent at net hit FH through the middle ×2; FH crosscourt rates higher · 0.27 pts
- Return +1: drive to your backhand side hit BH slice through the middle ×3; BH slice crosscourt rates higher · 0.25 pts
- Return +1: drive to your forehand side hit FH through the middle + approach ×1; FH down the line + approach rates higher · 0.20 pts
Botic Van De Zandschulp
5.0 points left on the table across 173 shots 2.87 per 100 shots
- Serve +1: deep return to your middle hit FH through the middle ×4; FH crosscourt rates higher · 0.29 pts
- Serve +1: mid-depth return to your middle hit FH through the middle ×3; FH crosscourt rates higher · 0.26 pts
- Serve +1: short return to your middle hit FH slice down the line + approach ×1; FH slice crosscourt + approach rates higher · 0.21 pts
- Rally, shots 5–8: drive to your forehand side hit FH through the middle ×4; FH crosscourt rates higher · 0.20 pts