Bangkok CH · F · Hard · 14 Jan 2017
Zhe Li v Janko Tipsarevic
44–65 in points · Janko Tipsarevic won
Why it went the way it did
Janko Tipsarevic won 12.1 more points than Zhe Li relative to what the serve alone predicted. Zhe Li's biggest leaks: forehand execution −5.3, backhand execution −1.7, serve 1st execution −1.4.
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 | Zhe Li | Janko Tipsarevic | ||||||
|---|---|---|---|---|---|---|---|---|
| Dir | Sel | Exec | Total | Dir | Sel | Exec | Total | |
| Serve 1st | −0.2 | ±0.0 | −1.4 | −1.6 | +0.1 | −0.1 | −1.2 | −1.1 |
| Serve 2nd | ±0.0 | ±0.0 | +0.4 | +0.4 | ±0.0 | ±0.0 | −1.6 | −1.6 |
| Return | −0.2 | +0.4 | −0.8 | −0.5 | −0.1 | +0.5 | +2.4 | +2.9 |
| Forehand | −0.6 | +0.8 | −5.3 | −5.1 | −0.9 | +0.7 | +2.5 | +2.4 |
| Backhand | −0.5 | −0.4 | −1.7 | −2.6 | −0.2 | −0.3 | +1.5 | +1.0 |
| Slice | ±0.0 | −1.2 | ±0.0 | −1.1 | −0.3 | −2.0 | +1.8 | −0.5 |
| Net | −0.2 | ±0.0 | +1.3 | +1.1 | +0.3 | +0.1 | −0.2 | +0.1 |
| Touch | ±0.0 | ±0.0 | −0.1 | −0.1 | ±0.0 | −0.5 | ±0.0 | −0.6 |
| Other | ±0.0 | ±0.0 | ±0.0 | ±0.0 | −0.2 | −0.1 | +0.3 | +0.1 |
| All shots | −1.6 | −0.3 | −7.5 | −9.5 | −1.3 | −1.6 | +5.5 | +2.6 |
Set by set
| Set | Zhe Li | Janko Tipsarevic | Net, Zhe | |
|---|---|---|---|---|
| 1 | −4.4 | +3.6 | −8.0 | |
| 2 | −5.1 | −1.0 | −4.1 |
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.
Zhe Li serving
| Set | Wide | Body | T |
|---|---|---|---|
| 1 | 47% 50% | 18% 33% | 35% 58% |
| 2 | 58% 33% | 15% 25% | 27% 71% |
Set to set +1.47 per 100 first serves in sets 2+
Within sets +0.17 per 100 first serves, every two to three service games
Janko Tipsarevic serving
| Set | Wide | Body | T |
|---|---|---|---|
| 1 | 40% 88% | – | 60% 75% |
| 2 | 45% 46% | 10% 100% | 45% 62% |
Within sets +1.87 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.
Zhe Li
6.2 points left on the table across 250 shots 2.50 per 100 shots
- Rally, shots 5–8: drive to your middle hit FH through the middle ×10; FH crosscourt rates higher · 0.57 pts
- Serve +1: deep return to your middle hit FH through the middle ×4; FH crosscourt rates higher · 0.29 pts
- Long rally, 9+: drive to your backhand side hit BH through the middle ×7; BH crosscourt rates higher · 0.29 pts
- Rally, shots 5–8: drive to your forehand side hit FH through the middle ×5; FH crosscourt rates higher · 0.25 pts
Janko Tipsarevic
6.1 points left on the table across 248 shots 2.46 per 100 shots
- Rally, shots 5–8: drive to your middle hit FH through the middle ×10; FH crosscourt rates higher · 0.57 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
- Long rally, 9+: drive to your middle hit FH through the middle ×5; FH crosscourt rates higher · 0.27 pts