US Open · R16 · Hard · 3 Sep 2013
Roger Federer v Tommy Robredo
101–110 in points · Tommy Robredo won
Why it went the way it did
Roger Federer won 1.1 more points than Tommy Robredo relative to what the serve alone predicted. Tommy Robredo's biggest leaks: slice shot selection −3.1, forehand direction choices −1.4, forehand execution −1.2.
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 | Roger Federer | Tommy Robredo | ||||||
|---|---|---|---|---|---|---|---|---|
| Dir | Sel | Exec | Total | Dir | Sel | Exec | Total | |
| Serve 1st | +0.3 | +0.1 | −1.5 | −1.2 | −0.8 | −0.2 | −0.1 | −1.1 |
| Serve 2nd | ±0.0 | +0.3 | +1.5 | +1.8 | −0.1 | ±0.0 | −0.1 | −0.3 |
| Return | +0.9 | +0.8 | −0.5 | +1.2 | +0.5 | −0.7 | −0.2 | −0.4 |
| Forehand | −0.6 | +5.3 | −6.0 | −1.2 | −1.4 | +4.3 | −1.2 | +1.7 |
| Backhand | ±0.0 | +1.4 | −1.4 | +0.1 | −0.3 | +0.8 | +0.5 | +1.1 |
| Slice | +0.1 | −1.8 | −0.7 | −2.3 | −0.4 | −3.1 | +1.6 | −1.9 |
| Net | +0.2 | +0.3 | +2.9 | +3.4 | −0.3 | +0.1 | +0.7 | +0.5 |
| Touch | +0.1 | −0.1 | −1.7 | −1.7 | −0.1 | −0.7 | +0.1 | −0.7 |
| All shots | +0.9 | +6.4 | −7.3 | ±0.0 | −2.9 | +0.6 | +1.3 | −1.0 |
Set by set
| Set | Roger Federer | Tommy Robredo | Net, Roger | |
|---|---|---|---|---|
| 1 | +2.2 | +1.4 | +0.8 | |
| 2 | +0.9 | +1.9 | −1.0 | |
| 3 | −3.1 | −4.4 | +1.3 |
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.
Roger Federer serving
| Set | Wide | Body | T |
|---|---|---|---|
| 1 | 43% 82% | 3% 0% | 55% 45% |
| 2 | 65% 47% | 4% 100% | 30% 86% |
| 3 | 57% 62% | 4% 0% | 39% 89% |
Set to set +2.59 per 100 first serves in sets 2+
Within sets +0.34 per 100 first serves, every two to three service games
Tommy Robredo serving
| Set | Wide | Body | T |
|---|---|---|---|
| 1 | 37% 72% | 22% 64% | 41% 45% |
| 2 | 41% 60% | 14% 60% | 46% 71% |
| 3 | 38% 60% | 26% 50% | 36% 79% |
Set to set +1.70 per 100 first serves in sets 2+
Within sets +0.84 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.
Roger Federer
10.1 points left on the table across 410 shots 2.46 per 100 shots
- Serve +1: mid-depth return to your backhand side hit FH through the middle ×3; FH inside-in rates higher · 0.35 pts
- Return of a 1st serve, wide, ad court hit BH down the line ×3; BH crosscourt rates higher · 0.27 pts
- Rally, shots 5–8: drive to your backhand side hit FH inside-out ×9; FH inside-in rates higher · 0.25 pts
- Serve +1: short return to your middle, you at net hit FH volley through the middle ×1; FH volley crosscourt rates higher · 0.25 pts
Tommy Robredo
11.8 points left on the table across 378 shots 3.11 per 100 shots
- Rally, shots 5–8: drive to your middle hit FH through the middle ×7; FH crosscourt rates higher · 0.40 pts
- Serve +1: mid-depth return to your middle hit FH through the middle ×4; FH crosscourt rates higher · 0.35 pts
- Rally, shots 5–8: drive to your backhand side hit BH through the middle ×8; BH crosscourt rates higher · 0.31 pts
- Rally, shots 5–8: drive to your forehand side hit FH through the middle ×6; FH crosscourt rates higher · 0.30 pts