Mallorca · R16 · Grass · 20 Jun 2019
Belinda Bencic v Shelby Rogers
75–73 in points · Belinda Bencic won
Why it went the way it did
Belinda Bencic won 0.6 more points than Shelby Rogers relative to what the serve alone predicted. Shelby Rogers's biggest leaks: return execution −3.8, touch execution −2.0, slice shot selection −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 | Belinda Bencic | Shelby Rogers | ||||||
|---|---|---|---|---|---|---|---|---|
| Dir | Sel | Exec | Total | Dir | Sel | Exec | Total | |
| Serve 1st | −0.5 | ±0.0 | −0.3 | −0.9 | −0.1 | ±0.0 | +1.5 | +1.3 |
| Serve 2nd | ±0.0 | ±0.0 | +0.2 | +0.2 | ±0.0 | ±0.0 | +1.8 | +1.8 |
| Return | +0.1 | −0.4 | +0.4 | +0.1 | +0.4 | +0.2 | −3.8 | −3.3 |
| Forehand | +0.2 | +0.5 | +0.5 | +1.1 | +0.2 | +0.3 | +2.5 | +3.0 |
| Backhand | +0.1 | +0.7 | −1.0 | −0.2 | +0.2 | +0.1 | −0.7 | −0.4 |
| Slice | +0.1 | −1.0 | +0.1 | −0.8 | −0.1 | −1.3 | −0.3 | −1.7 |
| Net | ±0.0 | +0.3 | −1.0 | −0.7 | +0.2 | +0.8 | −0.7 | +0.3 |
| Touch | −0.1 | −0.1 | +1.0 | +0.9 | +0.1 | ±0.0 | −2.0 | −2.0 |
| All shots | −0.1 | −0.1 | −0.1 | −0.3 | +0.9 | ±0.0 | −1.7 | −0.9 |
Set by set
| Set | Belinda Bencic | Shelby Rogers | Net, Belinda | |
|---|---|---|---|---|
| 1 | +0.3 | +4.7 | −4.4 | |
| 2 | −0.9 | −2.4 | +1.5 | |
| 3 | +0.4 | −3.2 | +3.5 |
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.
Belinda Bencic serving
| Set | Wide | Body | T |
|---|---|---|---|
| 1 | 42% 64% | 30% 50% | 27% 44% |
| 2 | 36% 58% | 36% 67% | 27% 78% |
| 3 | 40% 75% | 30% 33% | 30% 33% |
Set to set −1.38 per 100 first serves in sets 2+
Within sets +0.16 per 100 first serves, every two to three service games
Shelby Rogers serving
| Set | Wide | Body | T |
|---|---|---|---|
| 1 | 44% 67% | 18% 33% | 38% 85% |
| 2 | 45% 60% | 27% 83% | 27% 50% |
| 3 | 50% 38% | 25% 0% | 25% 50% |
Set to set −0.44 per 100 first serves in sets 2+
Within sets +1.51 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.
Belinda Bencic
3.7 points left on the table across 156 shots 2.37 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: volley to your backhand side, opponent at net hit BH lob down the line ×1; BH lob 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
- Return of a 2nd serve, T, ad court hit FH through the middle ×5; FH down the line rates higher · 0.18 pts
Shelby Rogers
3.4 points left on the table across 171 shots 2.00 per 100 shots
- Return +1: drive to your backhand side hit BH slice through the middle ×3; BH slice crosscourt rates higher · 0.19 pts
- Serve +1: short return to your middle hit BH through the middle ×2; BH down the line rates higher · 0.17 pts
- Return of a 1st serve, body, ad court hit BH down the line ×2; BH through the middle rates higher · 0.15 pts
- Rally, shots 5–8: drive to your forehand side, you at net hit FH volley down the line ×1; FH volley crosscourt rates higher · 0.14 pts