Roland Garros · Q3 · Clay · 20 May 2016
Louisa Chirico v Irina Khromacheva
63–46 in points · Louisa Chirico won
Why it went the way it did
Louisa Chirico won 7.9 more points than Irina Khromacheva relative to what the serve alone predicted. Irina Khromacheva's biggest leaks: slice shot selection −2.1, serve 1st execution −1.4, forehand execution −1.3.
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 | Louisa Chirico | Irina Khromacheva | ||||||
|---|---|---|---|---|---|---|---|---|
| Dir | Sel | Exec | Total | Dir | Sel | Exec | Total | |
| Serve 1st | −0.1 | ±0.0 | −0.3 | −0.5 | −0.1 | ±0.0 | −1.4 | −1.4 |
| Serve 2nd | ±0.0 | ±0.0 | +0.4 | +0.5 | +0.1 | ±0.0 | +0.7 | +0.8 |
| Return | −0.2 | +0.2 | −0.7 | −0.7 | ±0.0 | −0.9 | −1.1 | −2.1 |
| Forehand | +0.6 | +2.5 | +2.8 | +5.9 | +0.5 | +1.8 | −1.3 | +0.9 |
| Backhand | +0.1 | +0.3 | +4.1 | +4.5 | −0.3 | +1.2 | +0.2 | +1.1 |
| Slice | ±0.0 | −2.3 | −0.6 | −2.9 | +0.1 | −2.1 | +0.8 | −1.2 |
| Net | +0.2 | +0.5 | −0.3 | +0.5 | +0.1 | +0.1 | +0.7 | +1.0 |
| Touch | ±0.0 | −0.1 | +0.5 | +0.4 | ±0.0 | +0.2 | +0.4 | +0.7 |
| All shots | +0.7 | +1.0 | +6.0 | +7.7 | +0.4 | +0.3 | −0.9 | −0.2 |
Set by set
| Set | Louisa Chirico | Irina Khromacheva | Net, Louisa | |
|---|---|---|---|---|
| 1 | +4.9 | +4.6 | +0.3 | |
| 2 | +2.8 | −4.8 | +7.6 |
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.
Louisa Chirico serving
| Set | Wide | Body | T |
|---|---|---|---|
| 1 | 50% 59% | 27% 42% | 23% 60% |
| 2 | 53% 75% | 27% 75% | 20% 100% |
Set to set −3.41 per 100 first serves in sets 2+
Within sets +0.69 per 100 first serves, every two to three service games
Irina Khromacheva serving
| Set | Wide | Body | T |
|---|---|---|---|
| 1 | 44% 64% | 32% 50% | 24% 33% |
| 2 | 56% 43% | 20% 0% | 24% 67% |
Within sets −0.63 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.
Louisa Chirico
4.5 points left on the table across 228 shots 1.96 per 100 shots
- Return of a 1st serve, wide, ad court hit BH through the middle ×9; BH crosscourt rates higher · 0.24 pts
- Rally, shots 5–8: drive to your backhand side hit BH through the middle ×5; BH crosscourt rates higher · 0.21 pts
- Serve +1: deep return to your middle hit FH down the line ×7; FH crosscourt rates higher · 0.21 pts
- Rally, shots 5–8: drive to your backhand side hit FH inside-out ×6; FH inside-in rates higher · 0.18 pts
Irina Khromacheva
5.6 points left on the table across 242 shots 2.31 per 100 shots
- Rally, shots 5–8: drive to your forehand side hit FH through the middle ×5; FH crosscourt rates higher · 0.27 pts
- Rally, shots 5–8: drive to your backhand side hit BH through the middle ×6; BH crosscourt rates higher · 0.26 pts
- Serve +1: mid-depth return to your middle hit FH through the middle ×3; FH crosscourt rates higher · 0.25 pts
- Return +1: drive to your backhand side hit BH through the middle ×5; BH crosscourt rates higher · 0.24 pts