Wimbledon · R128 · Grass · 2 Jul 2019
Tamara Zidansek v Eugenie Bouchard
109–107 in points · Tamara Zidansek won
Why it went the way it did
Tamara Zidansek won 0.8 more points than Eugenie Bouchard relative to what the serve alone predicted. Eugenie Bouchard's biggest leaks: forehand execution −7.4, backhand execution −2.9, serve 1st execution −1.7.
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 | Tamara Zidansek | Eugenie Bouchard | ||||||
|---|---|---|---|---|---|---|---|---|
| Dir | Sel | Exec | Total | Dir | Sel | Exec | Total | |
| Serve 1st | −0.9 | −0.1 | −0.1 | −1.0 | −0.7 | −0.1 | −1.7 | −2.4 |
| Serve 2nd | −0.2 | ±0.0 | −0.7 | −0.8 | −0.1 | ±0.0 | −1.3 | −1.4 |
| Return | ±0.0 | +0.3 | +0.2 | +0.4 | +0.8 | +0.8 | +5.7 | +7.4 |
| Forehand | +0.2 | +4.5 | −2.4 | +2.3 | +1.7 | +2.9 | −7.4 | −2.8 |
| Backhand | −0.1 | +1.7 | −1.5 | +0.1 | +0.6 | +1.4 | −2.9 | −0.9 |
| Slice | ±0.0 | −3.6 | +0.4 | −3.1 | +0.2 | −1.1 | −0.8 | −1.7 |
| Net | ±0.0 | +0.2 | +1.6 | +1.8 | +0.4 | +1.3 | ±0.0 | +1.8 |
| Touch | +0.3 | −0.8 | +1.6 | +1.1 | ±0.0 | −0.3 | +0.2 | −0.1 |
| All shots | −0.7 | +2.4 | −1.0 | +0.7 | +2.9 | +5.1 | −8.1 | −0.1 |
Set by set
| Set | Tamara Zidansek | Eugenie Bouchard | Net, Tamara | |
|---|---|---|---|---|
| 1 | −3.3 | −5.5 | +2.2 | |
| 2 | −1.3 | +2.5 | −3.8 | |
| 3 | +5.3 | +2.9 | +2.4 |
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.
Tamara Zidansek serving
| Set | Wide | Body | T |
|---|---|---|---|
| 1 | 25% 75% | 44% 43% | 31% 50% |
| 2 | 50% 65% | 30% 25% | 20% 50% |
| 3 | 46% 59% | 32% 33% | 22% 38% |
Set to set +1.98 per 100 first serves in sets 2+
Within sets +0.66 per 100 first serves, every two to three service games
Eugenie Bouchard serving
| Set | Wide | Body | T |
|---|---|---|---|
| 1 | 45% 23% | 21% 83% | 34% 50% |
| 2 | 35% 69% | 38% 50% | 27% 60% |
| 3 | 37% 47% | 32% 46% | 32% 31% |
Set to set +1.06 per 100 first serves in sets 2+
Within sets +0.02 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.
Tamara Zidansek
10.4 points left on the table across 379 shots 2.74 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
- Return of a 1st serve, body, ad court hit FH down the line ×6; FH crosscourt rates higher · 0.41 pts
- Long rally, 9+: volley to your forehand side, opponent at net hit FH through the middle ×1; FH down the line rates higher · 0.31 pts
- Serve +1: deep return to your backhand side hit FH through the middle ×2; FH inside-in rates higher · 0.31 pts
Eugenie Bouchard
6.8 points left on the table across 367 shots 1.85 per 100 shots
- Return +1: drive to your backhand side, opponent at net hit BH through the middle ×3; BH crosscourt rates higher · 0.33 pts
- Long rally, 9+: drive to your middle, you at net hit FH volley through the middle ×1; FH volley crosscourt rates higher · 0.24 pts
- Rally, shots 5–8: drive to your forehand side hit FH through the middle ×4; FH crosscourt rates higher · 0.22 pts
- Rally, shots 5–8: drive to your backhand side hit BH through the middle ×5; BH crosscourt rates higher · 0.21 pts