Monterrey · R32 · Hard · 28 Feb 2022
Emma Navarro v Marcela Zacarias
95–109 in points · Marcela Zacarias won
Why it went the way it did
Marcela Zacarias won 8.6 more points than Emma Navarro relative to what the serve alone predicted. Emma Navarro's biggest leaks: slice shot selection −4.7, forehand direction choices −2.3, net 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 | Emma Navarro | Marcela Zacarias | ||||||
|---|---|---|---|---|---|---|---|---|
| Dir | Sel | Exec | Total | Dir | Sel | Exec | Total | |
| Serve 1st | −0.1 | ±0.0 | −0.9 | −1.0 | −1.1 | ±0.0 | +1.1 | −0.1 |
| Serve 2nd | ±0.0 | ±0.0 | −0.7 | −0.7 | ±0.0 | ±0.0 | +0.9 | +0.9 |
| Return | −0.3 | +0.4 | +2.0 | +2.1 | −0.4 | +0.6 | +6.6 | +6.8 |
| Forehand | −2.3 | +3.9 | +0.2 | +1.8 | −1.5 | +3.4 | +3.4 | +5.3 |
| Backhand | +0.2 | +1.3 | +2.2 | +3.7 | −1.4 | +1.0 | +3.2 | +2.8 |
| Slice | −0.3 | −4.7 | +0.8 | −4.3 | −0.5 | −4.2 | ±0.0 | −4.8 |
| Net | +0.3 | +0.6 | −1.6 | −0.7 | −0.1 | +0.2 | −1.5 | −1.4 |
| Touch | −0.2 | −1.4 | +0.5 | −1.1 | +0.2 | −2.0 | +0.8 | −1.0 |
| All shots | −2.7 | ±0.0 | +2.5 | −0.2 | −5.0 | −1.1 | +14.5 | +8.4 |
Set by set
| Set | Emma Navarro | Marcela Zacarias | Net, Emma | |
|---|---|---|---|---|
| 1 | −5.6 | +1.3 | −6.9 | |
| 2 | +5.4 | +3.0 | +2.5 | |
| 3 | −0.1 | +4.1 | −4.2 |
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.
Emma Navarro serving
| Set | Wide | Body | T |
|---|---|---|---|
| 1 | 47% 47% | 22% 43% | 31% 30% |
| 2 | 42% 50% | 21% 38% | 37% 64% |
| 3 | 46% 56% | 23% 44% | 31% 33% |
Set to set −0.17 per 100 first serves in sets 2+
Within sets −0.08 per 100 first serves, every two to three service games
Marcela Zacarias serving
| Set | Wide | Body | T |
|---|---|---|---|
| 1 | 20% 100% | 60% 75% | 20% 0% |
| 2 | 27% 50% | 43% 42% | 30% 54% |
| 3 | 33% 60% | 43% 62% | 23% 43% |
Set to set +1.35 per 100 first serves in sets 2+
Within sets +1.61 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.
Emma Navarro
16.7 points left on the table across 578 shots 2.90 per 100 shots
- Rally, shots 5–8: drive to your forehand side hit FH through the middle ×21; FH crosscourt rates higher · 1.14 pts
- Rally, shots 5–8: drive to your middle hit FH through the middle ×16; FH crosscourt rates higher · 1.11 pts
- Return +1: drive to your middle hit FH through the middle ×16; FH down the line rates higher · 1.03 pts
- Long rally, 9+: drive to your middle hit FH through the middle ×10; FH down the line rates higher · 0.71 pts
Marcela Zacarias
17.7 points left on the table across 572 shots 3.10 per 100 shots
- Rally, shots 5–8: drive to your middle hit FH through the middle ×19; FH crosscourt rates higher · 1.32 pts
- Rally, shots 5–8: drive to your forehand side hit FH through the middle ×18; FH crosscourt rates higher · 0.98 pts
- Long rally, 9+: drive to your backhand side hit BH through the middle ×14; BH crosscourt rates higher · 0.73 pts
- Rally, shots 5–8: drive to your backhand side hit BH through the middle ×17; BH crosscourt rates higher · 0.73 pts