Bastad · F · Clay · 19 Jul 2015
Mona Barthel v Johanna Larsson
75–90 in points · Johanna Larsson won
Why it went the way it did
Johanna Larsson won 6.4 more points than Mona Barthel relative to what the serve alone predicted. Mona Barthel's biggest leaks: return execution −3.8, backhand execution −2.0, serve 1st 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 | Mona Barthel | Johanna Larsson | ||||||
|---|---|---|---|---|---|---|---|---|
| Dir | Sel | Exec | Total | Dir | Sel | Exec | Total | |
| Serve 1st | +0.4 | +0.2 | −1.6 | −1.1 | +0.3 | ±0.0 | +0.3 | +0.5 |
| Serve 2nd | ±0.0 | ±0.0 | +1.1 | +1.1 | +0.1 | ±0.0 | +0.2 | +0.3 |
| Return | +0.1 | +0.8 | −3.8 | −2.9 | +0.2 | +1.1 | ±0.0 | +1.2 |
| Forehand | −0.1 | +2.8 | −0.8 | +1.9 | −0.4 | +3.6 | +0.2 | +3.4 |
| Backhand | +0.6 | +0.3 | −2.0 | −1.1 | −0.4 | +1.4 | −1.2 | −0.1 |
| Slice | −0.1 | −0.8 | −1.1 | −2.1 | −0.2 | −3.6 | +2.8 | −1.0 |
| Net | +0.4 | +0.9 | +2.3 | +3.5 | −0.2 | +0.8 | +0.2 | +0.8 |
| Touch | ±0.0 | −0.9 | −0.1 | −0.9 | +0.2 | −0.2 | −0.4 | −0.4 |
| All shots | +1.3 | +3.2 | −6.0 | −1.6 | −0.3 | +3.0 | +2.2 | +4.8 |
Set by set
| Set | Mona Barthel | Johanna Larsson | Net, Mona | |
|---|---|---|---|---|
| 1 | −1.9 | +2.3 | −4.3 | |
| 2 | +0.4 | +2.5 | −2.1 |
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.
Mona Barthel serving
| Set | Wide | Body | T |
|---|---|---|---|
| 1 | 58% 50% | 17% 50% | 25% 33% |
| 2 | 55% 48% | 6% 67% | 40% 67% |
Within sets −0.96 per 100 first serves, every two to three service games
Johanna Larsson serving
| Set | Wide | Body | T |
|---|---|---|---|
| 1 | 60% 58% | 20% 50% | 20% 100% |
| 2 | 55% 62% | 13% 44% | 31% 62% |
Within sets +0.13 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.
Mona Barthel
8.3 points left on the table across 369 shots 2.26 per 100 shots
- Rally, shots 5–8: drive to your forehand side hit FH through the middle ×10; FH crosscourt rates higher · 0.54 pts
- Rally, shots 5–8: drive to your middle hit FH through the middle ×5; FH crosscourt rates higher · 0.35 pts
- Rally, shots 5–8: drive to your backhand side hit BH through the middle ×7; BH crosscourt rates higher · 0.30 pts
- Long rally, 9+: drive to your middle, you at net hit BH volley through the middle ×1; BH volley crosscourt rates higher · 0.28 pts
Johanna Larsson
9.7 points left on the table across 346 shots 2.81 per 100 shots
- Rally, shots 5–8: drive to your backhand side hit BH through the middle ×12; BH crosscourt rates higher · 0.52 pts
- Return +1: drive to your backhand side hit BH slice through the middle ×7; BH slice crosscourt rates higher · 0.45 pts
- Long rally, 9+: drive to your forehand side hit FH through the middle ×7; FH crosscourt rates higher · 0.39 pts
- Long rally, 9+: drive to your backhand side hit BH through the middle ×7; BH crosscourt rates higher · 0.37 pts