Indian Wells · R32 · Hard · 16 Mar 2009
Daniela Hantuchova v Petra Cetkovska
86–80 in points · Daniela Hantuchova won
Why it went the way it did
Daniela Hantuchova won 2.9 more points than Petra Cetkovska relative to what the serve alone predicted. Petra Cetkovska's biggest leaks: slice shot selection −6.1, backhand execution −5.5, return shot selection −1.1.
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 | Daniela Hantuchova | Petra Cetkovska | ||||||
|---|---|---|---|---|---|---|---|---|
| Dir | Sel | Exec | Total | Dir | Sel | Exec | Total | |
| Serve 1st | +0.5 | −0.1 | −2.2 | −1.8 | −0.4 | −0.1 | −0.4 | −0.9 |
| Serve 2nd | +0.1 | ±0.0 | +1.0 | +1.1 | +0.1 | ±0.0 | +0.2 | +0.2 |
| Return | +0.2 | +0.8 | +0.2 | +1.3 | +0.3 | −1.1 | +2.4 | +1.6 |
| Forehand | +0.7 | +1.1 | +3.5 | +5.3 | +0.2 | +1.8 | ±0.0 | +2.0 |
| Backhand | +0.4 | +1.1 | −5.3 | −3.8 | +0.3 | +0.7 | −5.5 | −4.4 |
| Slice | ±0.0 | −1.9 | −0.3 | −2.3 | +0.6 | −6.1 | +3.2 | −2.3 |
| Net | −0.2 | +0.3 | +0.6 | +0.7 | −0.1 | +0.2 | −0.3 | −0.2 |
| Touch | +0.1 | +0.1 | −2.3 | −2.1 | +0.1 | −0.3 | −0.1 | −0.4 |
| All shots | +1.8 | +1.5 | −4.9 | −1.6 | +0.9 | −4.9 | −0.5 | −4.5 |
Set by set
| Set | Daniela Hantuchova | Petra Cetkovska | Net, Daniela | |
|---|---|---|---|---|
| 1 | −2.4 | −3.5 | +1.1 | |
| 2 | +0.8 | −1.0 | +1.8 |
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.
Daniela Hantuchova serving
| Set | Wide | Body | T |
|---|---|---|---|
| 1 | 49% 74% | 9% 25% | 43% 50% |
| 2 | 54% 55% | 5% 100% | 41% 53% |
Set to set +2.82 per 100 first serves in sets 2+
Within sets +1.76 per 100 first serves, every two to three service games
Petra Cetkovska serving
| Set | Wide | Body | T |
|---|---|---|---|
| 1 | 28% 64% | 28% 45% | 45% 61% |
| 2 | 40% 53% | 36% 53% | 24% 50% |
Set to set −1.08 per 100 first serves in sets 2+
Within sets −0.90 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.
Daniela Hantuchova
7.1 points left on the table across 324 shots 2.19 per 100 shots
- Return of a 2nd serve, body, deuce court hit BH through the middle ×8; BH crosscourt rates higher · 0.36 pts
- Rally, shots 5–8: slice to your forehand side, you at net hit FH volley through the middle ×1; FH volley crosscourt rates higher · 0.34 pts
- Rally, shots 5–8: drive to your forehand side hit FH through the middle ×4; FH crosscourt rates higher · 0.22 pts
- Serve +1: mid-depth return to your backhand side hit BH through the middle ×3; BH down the line rates higher · 0.21 pts
Petra Cetkovska
7.3 points left on the table across 324 shots 2.24 per 100 shots
- Rally, shots 5–8: drive to your forehand side hit FH through the middle ×9; FH crosscourt rates higher · 0.49 pts
- Serve +1: mid-depth return to your middle hit BH through the middle ×4; BH crosscourt rates higher · 0.25 pts
- Return of a 2nd serve, wide, ad court hit BH through the middle ×5; BH crosscourt rates higher · 0.24 pts
- Return +1: drive to your backhand side hit BH through the middle ×5; BH crosscourt rates higher · 0.24 pts