Roland Garros · R128 · Clay · 28 Sep 2020
Christina Mchale v Karolina Muchova
70–51 in points · Christina Mchale won
Why it went the way it did
Christina Mchale won 9.9 more points than Karolina Muchova relative to what the serve alone predicted. Karolina Muchova's biggest leaks: forehand execution −4.3, backhand execution −3.8, slice shot selection −3.3.
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 | Christina Mchale | Karolina Muchova | ||||||
|---|---|---|---|---|---|---|---|---|
| Dir | Sel | Exec | Total | Dir | Sel | Exec | Total | |
| Serve 1st | −0.2 | ±0.0 | +1.0 | +0.8 | +0.1 | +0.6 | −0.7 | ±0.0 |
| Serve 2nd | ±0.0 | ±0.0 | −1.3 | −1.3 | ±0.0 | ±0.0 | +0.7 | +0.7 |
| Return | +0.2 | −0.2 | +2.6 | +2.6 | +0.3 | +1.0 | +0.1 | +1.4 |
| Forehand | +0.2 | +1.8 | −1.0 | +1.0 | −0.6 | +2.7 | −4.3 | −2.2 |
| Backhand | −0.6 | +0.6 | +0.5 | +0.5 | −0.2 | +1.0 | −3.8 | −3.1 |
| Slice | −0.1 | −1.4 | +0.7 | −0.8 | ±0.0 | −3.3 | −0.6 | −4.0 |
| Net | −0.2 | +0.2 | −0.2 | −0.2 | ±0.0 | +0.2 | −0.3 | −0.1 |
| Touch | ±0.0 | −0.6 | +0.5 | −0.2 | −0.1 | −0.1 | +0.1 | −0.1 |
| All shots | −0.6 | +0.4 | +2.8 | +2.5 | −0.4 | +1.9 | −8.8 | −7.4 |
Set by set
| Set | Christina Mchale | Karolina Muchova | Net, Christina | |
|---|---|---|---|---|
| 1 | +0.3 | −6.8 | +7.1 | |
| 2 | +2.2 | −0.6 | +2.8 |
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.
Christina Mchale serving
| Set | Wide | Body | T |
|---|---|---|---|
| 1 | 57% 67% | 19% 25% | 24% 100% |
| 2 | 37% 54% | 34% 58% | 29% 70% |
Within sets +0.07 per 100 first serves, every two to three service games
Karolina Muchova serving
| Set | Wide | Body | T |
|---|---|---|---|
| 1 | 22% 20% | 26% 67% | 52% 33% |
| 2 | 38% 47% | 15% 67% | 48% 53% |
Within sets −0.77 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.
Christina Mchale
6.9 points left on the table across 261 shots 2.65 per 100 shots
- Rally, shots 5–8: drive to your backhand side hit BH through the middle ×16; BH crosscourt rates higher · 0.69 pts
- Return +1: drive to your backhand side hit BH through the middle ×10; BH crosscourt rates higher · 0.48 pts
- Rally, shots 5–8: drive to your middle hit FH through the middle ×6; FH crosscourt rates higher · 0.42 pts
- Long rally, 9+: drive to your backhand side hit BH through the middle ×6; BH crosscourt rates higher · 0.31 pts
Karolina Muchova
7.9 points left on the table across 273 shots 2.91 per 100 shots
- Rally, shots 5–8: drive to your middle hit FH through the middle ×10; FH crosscourt rates higher · 0.70 pts
- Rally, shots 5–8: drive to your middle hit BH through the middle ×6; BH crosscourt rates higher · 0.28 pts
- Serve +1: mid-depth return to your middle hit FH through the middle ×3; FH crosscourt rates higher · 0.25 pts
- Rally, shots 5–8: lob to your middle, you at net hit Smash through the middle ×1; Smash crosscourt rates higher · 0.25 pts