Hobart · F · Hard · 14 Jan 2012
Mona Barthel v Yanina Wickmayer
60–34 in points · Mona Barthel won
Why it went the way it did
Mona Barthel won 13.4 more points than Yanina Wickmayer relative to what the serve alone predicted. Yanina Wickmayer's biggest leaks: net execution −1.2, serve 2nd execution −1.1, slice execution −1.0.
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 | Yanina Wickmayer | ||||||
|---|---|---|---|---|---|---|---|---|
| Dir | Sel | Exec | Total | Dir | Sel | Exec | Total | |
| Serve 1st | +0.2 | ±0.0 | +2.0 | +2.2 | ±0.0 | ±0.0 | −0.2 | −0.2 |
| Serve 2nd | ±0.0 | ±0.0 | ±0.0 | ±0.0 | ±0.0 | ±0.0 | −1.1 | −1.2 |
| Return | +0.3 | +0.6 | +2.3 | +3.2 | +0.1 | +0.5 | +1.0 | +1.6 |
| Forehand | −0.3 | +1.1 | +5.2 | +6.0 | +0.3 | +1.5 | −0.3 | +1.5 |
| Backhand | ±0.0 | +1.0 | +3.3 | +4.3 | +0.4 | +0.2 | +2.1 | +2.8 |
| Slice | +0.2 | −2.4 | +1.0 | −1.2 | −0.1 | −0.5 | −1.0 | −1.6 |
| Net | +0.1 | ±0.0 | +0.4 | +0.5 | −0.2 | +0.2 | −1.2 | −1.1 |
| Touch | ±0.0 | −0.1 | +0.2 | +0.1 | ±0.0 | ±0.0 | +0.1 | ±0.0 |
| All shots | +0.4 | +0.2 | +14.4 | +15.1 | +0.6 | +1.8 | −0.7 | +1.7 |
Set by set
| Set | Mona Barthel | Yanina Wickmayer | Net, Mona | |
|---|---|---|---|---|
| 1 | +3.7 | −4.6 | +8.3 | |
| 2 | +11.4 | +6.3 | +5.1 |
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 | 53% 70% | 16% 33% | 32% 100% |
| 2 | 48% 58% | 12% 33% | 40% 70% |
Within sets −0.02 per 100 first serves, every two to three service games
Yanina Wickmayer serving
| Set | Wide | Body | T |
|---|---|---|---|
| 1 | 31% 0% | 25% 25% | 44% 43% |
| 2 | 38% 54% | 18% 33% | 44% 40% |
Within sets −0.45 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
4.7 points left on the table across 202 shots 2.32 per 100 shots
- Return +1: drive to your forehand side hit FH through the middle ×6; FH crosscourt rates higher · 0.38 pts
- Rally, shots 5–8: drive to your backhand side hit BH through the middle ×7; BH crosscourt rates higher · 0.30 pts
- Rally, shots 5–8: drive to your middle hit FH through the middle ×4; FH crosscourt rates higher · 0.28 pts
- Rally, shots 5–8: volley to your middle, opponent at net hit FH through the middle ×1; FH crosscourt rates higher · 0.24 pts
Yanina Wickmayer
4.7 points left on the table across 213 shots 2.19 per 100 shots
- 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: drive to your backhand side, you at net hit BH volley through the middle ×1; BH volley crosscourt rates higher · 0.21 pts
- Rally, shots 5–8: drive 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 middle hit FH through the middle + approach ×1; FH crosscourt + approach rates higher · 0.20 pts