Indian Wells Masters · R64 · Hard · 9 Mar 2024
Roman Safiullin v Sebastian Korda
49–65 in points · Sebastian Korda won
Why it went the way it did
Sebastian Korda won 7.1 more points than Roman Safiullin relative to what the serve alone predicted. Roman Safiullin's biggest leaks: backhand execution −3.7, return execution −2.8, serve 1st execution −2.5.
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 | Roman Safiullin | Sebastian Korda | ||||||
|---|---|---|---|---|---|---|---|---|
| Dir | Sel | Exec | Total | Dir | Sel | Exec | Total | |
| Serve 1st | −0.3 | ±0.0 | −2.5 | −2.8 | +0.2 | −0.1 | −1.4 | −1.2 |
| Serve 2nd | ±0.0 | ±0.0 | −0.2 | −0.2 | ±0.0 | ±0.0 | +1.1 | +1.1 |
| Return | +0.3 | −0.5 | −2.8 | −3.0 | +0.1 | +0.2 | −1.4 | −1.1 |
| Forehand | −0.2 | +1.0 | −1.2 | −0.4 | +0.3 | +0.7 | −3.2 | −2.1 |
| Backhand | +0.1 | −0.1 | −3.7 | −3.7 | −0.2 | −0.3 | −1.1 | −1.6 |
| Slice | ±0.0 | −0.7 | −0.1 | −0.8 | +0.1 | −0.5 | +0.2 | −0.3 |
| Net | ±0.0 | +0.2 | −2.1 | −1.9 | +0.1 | ±0.0 | −0.9 | −0.9 |
| Touch | ±0.0 | ±0.0 | ±0.0 | ±0.0 | +0.1 | −0.2 | +0.5 | +0.5 |
| All shots | ±0.0 | −0.2 | −12.5 | −12.8 | +0.6 | −0.1 | −6.1 | −5.6 |
Set by set
| Set | Roman Safiullin | Sebastian Korda | Net, Roman | |
|---|---|---|---|---|
| 1 | −6.9 | −5.0 | −1.9 | |
| 2 | −5.9 | −0.7 | −5.2 |
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.
Roman Safiullin serving
| Set | Wide | Body | T |
|---|---|---|---|
| 1 | 42% 91% | 23% 33% | 35% 56% |
| 2 | 43% 33% | 14% 100% | 43% 33% |
Within sets −1.53 per 100 first serves, every two to three service games
Sebastian Korda serving
| Set | Wide | Body | T |
|---|---|---|---|
| 1 | 49% 56% | – | 51% 84% |
| 2 | 26% 33% | 4% 0% | 70% 75% |
Set to set +3.38 per 100 first serves in sets 2+
Within sets +1.29 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.
Roman Safiullin
3.2 points left on the table across 172 shots 1.84 per 100 shots
- Return +1: drive to your middle hit FH through the middle ×4; FH crosscourt rates higher · 0.24 pts
- Serve +1: deep return to your middle hit FH through the middle ×3; FH crosscourt rates higher · 0.22 pts
- Rally, shots 5–8: drive to your forehand side hit FH through the middle ×4; FH crosscourt rates higher · 0.20 pts
- Serve +1: mid-depth return to your middle hit FH through the middle ×2; FH crosscourt rates higher · 0.17 pts
Sebastian Korda
3.2 points left on the table across 167 shots 1.93 per 100 shots
- Rally, shots 5–8: drive to your forehand side hit FH through the middle ×4; FH crosscourt rates higher · 0.20 pts
- Serve +1: short return to your middle, you at net hit BH volley through the middle ×1; BH volley crosscourt rates higher · 0.20 pts
- Rally, shots 5–8: drive to your backhand side hit BH through the middle ×5; BH crosscourt rates higher · 0.19 pts
- Serve +1: deep return to your middle hit FH through the middle ×2; FH crosscourt rates higher · 0.15 pts