United Cup · RR · Hard · 4 Jan 2026
Alexander Zverev v Tallon Griekspoor
59–32 in points · Alexander Zverev won
Why it went the way it did
Alexander Zverev won 13.1 more points than Tallon Griekspoor relative to what the serve alone predicted. Tallon Griekspoor's biggest leaks: forehand execution −3.4, slice shot selection −1.0, serve 2nd execution −0.7.
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 | Alexander Zverev | Tallon Griekspoor | ||||||
|---|---|---|---|---|---|---|---|---|
| Dir | Sel | Exec | Total | Dir | Sel | Exec | Total | |
| Serve 1st | +0.3 | +0.2 | +6.2 | +6.6 | +0.2 | +0.2 | +2.2 | +2.7 |
| Serve 2nd | ±0.0 | +0.1 | +0.9 | +1.0 | ±0.0 | ±0.0 | −0.7 | −0.7 |
| Return | +0.1 | +0.5 | +2.4 | +2.9 | +0.2 | ±0.0 | ±0.0 | +0.2 |
| Forehand | +0.3 | +0.7 | +1.1 | +2.1 | +0.3 | +1.0 | −3.4 | −2.1 |
| Backhand | +0.4 | +0.5 | −0.8 | +0.1 | +0.1 | +0.5 | +1.2 | +1.8 |
| Slice | ±0.0 | −1.1 | +1.7 | +0.6 | ±0.0 | −1.0 | −0.5 | −1.5 |
| Net | ±0.0 | +0.2 | −0.3 | −0.1 | +0.7 | −0.1 | ±0.0 | +0.5 |
| Touch | ±0.0 | ±0.0 | ±0.0 | ±0.0 | ±0.0 | ±0.0 | −0.5 | −0.5 |
| All shots | +1.0 | +1.2 | +11.2 | +13.4 | +1.4 | +0.6 | −1.7 | +0.3 |
Set by set
| Set | Alexander Zverev | Tallon Griekspoor | Net, Alexander | |
|---|---|---|---|---|
| 1 | +7.8 | +3.8 | +4.0 | |
| 2 | +5.6 | −3.5 | +9.1 |
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.
Alexander Zverev serving
| Set | Wide | Body | T |
|---|---|---|---|
| 1 | 45% 92% | – | 55% 75% |
| 2 | 47% 67% | – | 53% 80% |
Set to set +0.25 per 100 first serves in sets 2+
Within sets +0.78 per 100 first serves, every two to three service games
Tallon Griekspoor serving
| Set | Wide | Body | T |
|---|---|---|---|
| 1 | 79% 65% | 3% 100% | 17% 80% |
| 2 | 62% 0% | – | 38% 20% |
Within sets −0.54 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.
Alexander Zverev
2.0 points left on the table across 89 shots 2.27 per 100 shots
- Return of a 1st serve, wide, deuce court, server rushing the net hit FH through the middle ×3; FH crosscourt rates higher · 0.23 pts
- Serve +1: drive to your backhand side, you at net hit BH volley through the middle ×1; BH volley crosscourt rates higher · 0.21 pts
- Rally, shots 5–8: drive to your backhand side, you at net hit BH volley down the line ×1; BH volley crosscourt rates higher · 0.12 pts
- Long rally, 9+: slice to your forehand side, you at net hit FH volley down the line ×1; FH volley crosscourt rates higher · 0.11 pts
Tallon Griekspoor
1.8 points left on the table across 91 shots 1.96 per 100 shots
- Rally, shots 5–8: drive to your forehand side, you at net hit FH volley through the middle ×1; FH volley crosscourt rates higher · 0.28 pts
- Rally, shots 5–8: drive to your backhand side hit BH slice through the middle ×2; BH slice crosscourt rates higher · 0.15 pts
- Return +1: drive to your forehand side hit FH through the middle ×2; FH crosscourt rates higher · 0.12 pts
- Return of a 1st serve, T, deuce court hit BH slice down the line ×1; BH slice crosscourt rates higher · 0.12 pts