US Open · R128 · Hard · 30 Aug 2022
Soon Woo Kwon v Fernando Verdasco
132–112 in points · Soon Woo Kwon won
Why it went the way it did
Soon Woo Kwon won 9.8 more points than Fernando Verdasco relative to what the serve alone predicted. Fernando Verdasco's biggest leaks: forehand execution −8.9, return execution −5.1, slice shot selection −3.0.
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 | Soon Woo Kwon | Fernando Verdasco | ||||||
|---|---|---|---|---|---|---|---|---|
| Dir | Sel | Exec | Total | Dir | Sel | Exec | Total | |
| Serve 1st | ±0.0 | −0.2 | −2.9 | −3.1 | −0.4 | −0.2 | −1.1 | −1.7 |
| Serve 2nd | +0.1 | −0.1 | −1.8 | −1.7 | −0.1 | −0.1 | +0.4 | +0.3 |
| Return | −0.3 | −0.5 | −4.1 | −5.0 | ±0.0 | +0.2 | −5.1 | −4.9 |
| Forehand | −0.8 | +2.0 | +2.8 | +4.0 | −0.1 | +3.1 | −8.9 | −5.9 |
| Backhand | −0.4 | +0.1 | −1.5 | −1.8 | +0.1 | +0.2 | −1.7 | −1.4 |
| Slice | +0.3 | −2.6 | +0.4 | −1.9 | −0.2 | −3.0 | +1.4 | −1.8 |
| Net | +0.1 | +0.4 | +0.3 | +0.8 | −0.3 | +0.4 | +0.2 | +0.4 |
| Touch | −0.1 | −0.9 | +3.9 | +3.0 | ±0.0 | −0.3 | +0.1 | −0.2 |
| Other | ±0.0 | −0.1 | +0.2 | +0.1 | ±0.0 | ±0.0 | ±0.0 | ±0.0 |
| All shots | −1.2 | −1.8 | −2.6 | −5.6 | −1.0 | +0.3 | −14.7 | −15.4 |
Set by set
| Set | Soon Woo Kwon | Fernando Verdasco | Net, Soon | |
|---|---|---|---|---|
| 1 | −0.5 | −5.4 | +5.0 | |
| 2 | −2.9 | −2.0 | −0.9 | |
| 3 | +1.9 | −2.1 | +4.0 | |
| 4 | −4.1 | −5.9 | +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.
Soon Woo Kwon serving
| Set | Wide | Body | T |
|---|---|---|---|
| 1 | 48% 60% | 10% 100% | 43% 89% |
| 2 | 49% 64% | 4% 100% | 47% 62% |
| 3 | 43% 77% | 7% 50% | 50% 60% |
| 4 | 57% 81% | 18% 60% | 25% 57% |
Set to set +0.23 per 100 first serves in sets 2+
Within sets −0.04 per 100 first serves, every two to three service games
Fernando Verdasco serving
| Set | Wide | Body | T |
|---|---|---|---|
| 1 | 33% 75% | 25% 17% | 42% 60% |
| 2 | 48% 60% | 5% 50% | 48% 75% |
| 3 | 40% 58% | 20% 50% | 40% 50% |
| 4 | 26% 50% | 13% 67% | 61% 71% |
Set to set +0.08 per 100 first serves in sets 2+
Within sets +0.98 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.
Soon Woo Kwon
9.1 points left on the table across 333 shots 2.73 per 100 shots
- Rally, shots 5–8: drive to your backhand side hit BH through the middle ×14; BH crosscourt rates higher · 0.54 pts
- Return of a 1st serve, wide, ad court hit BH slice through the middle ×7; BH slice crosscourt rates higher · 0.53 pts
- Serve +1: deep return to your middle hit FH through the middle ×6; FH crosscourt rates higher · 0.44 pts
- Rally, shots 5–8: drive to your middle hit FH through the middle ×6; FH crosscourt rates higher · 0.34 pts
Fernando Verdasco
11.7 points left on the table across 353 shots 3.31 per 100 shots
- Return of a 1st serve, T, deuce court hit FH through the middle ×8; FH inside-out rates higher · 0.84 pts
- Return of a 1st serve, wide, ad court hit FH crosscourt ×5; FH inside-out rates higher · 0.36 pts
- Serve +1: mid-depth return to your middle hit FH through the middle ×4; FH crosscourt rates higher · 0.35 pts
- Return of a 2nd serve, T, ad court hit BH through the middle ×4; BH inside-in rates higher · 0.34 pts