RallyIQ

Roland Garros · QF · Clay · 2 Jun 2004

Gustavo Kuerten v David Nalbandian

122–132 in points · David Nalbandian won

Why it went the way it did

David Nalbandian won 6.3 more points than Gustavo Kuerten relative to what the serve alone predicted. Gustavo Kuerten's biggest leaks: forehand execution −3.6, slice shot selection −2.6, backhand shot selection −1.5.

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.

ShotGustavo KuertenDavid Nalbandian
DirSelExecTotalDirSelExecTotal
Serve 1st +0.4 −0.1 −1.1 −0.8 +0.4 −0.2 −1.5 −1.3
Serve 2nd +0.1 −0.1 +1.4 +1.4 +0.1 −0.1 −1.3 −1.3
Return −0.2 +0.3 +0.2 +0.3 −0.1 −1.5 +5.3 +3.7
Forehand +0.1 +2.6 −3.6 −0.9 +0.7 +2.0 −0.9 +1.8
Backhand −0.4 −1.5 +1.3 −0.6 +0.3 −0.4 +5.0 +4.9
Slice ±0.0 −2.6 +1.0 −1.7 −0.2 −4.4 +0.9 −3.8
Net +0.8 +1.0 +0.4 +2.2 +0.4 +0.3 +1.8 +2.5
Touch −0.2 −0.1 +1.1 +0.9 −0.4 −0.3 +1.1 +0.5
All shots +0.5−0.4 +0.6+0.7 +1.2−4.6 +10.4+6.9

Set by set

SetGustavo KuertenDavid NalbandianNet, Gustavo
1−0.8+4.5 −5.2
2+4.3+1.6 +2.8
3−2.2+1.7 −3.8
4−0.7−0.8 ±0.0

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.

Gustavo Kuerten serving

SetWideBodyT
1 69% 45% 9% 67% 22% 29%
2 48% 57% 3% 100% 48% 86%
3 47% 29% 3% 100% 50% 53%
4 52% 55% – 48% 70%

Set to set +0.96 per 100 first serves in sets 2+

Within sets +0.79 per 100 first serves, every two to three service games

David Nalbandian serving

SetWideBodyT
1 52% 69% – 48% 50%
2 64% 71% – 36% 50%
3 58% 53% – 42% 55%
4 55% 62% 2% 100% 43% 60%

Set to set +0.08 per 100 first serves in sets 2+

Within sets +0.48 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.

Gustavo Kuerten

14.3 points left on the table across 567 shots 2.52 per 100 shots

  1. Return of a 1st serve, T, ad court hit FH through the middle ×8; FH inside-in rates higher · 1.30 pts
  2. Rally, shots 5–8: drive to your forehand side hit FH through the middle ×18; FH crosscourt rates higher · 0.91 pts
  3. Return of a 1st serve, T, ad court hit FH down the line ×4; FH inside-in rates higher · 0.73 pts
  4. Rally, shots 5–8: drive to your backhand side hit BH through the middle ×18; BH crosscourt rates higher · 0.70 pts

David Nalbandian

12.8 points left on the table across 556 shots 2.29 per 100 shots

  1. Return of a 1st serve, T, ad court hit FH through the middle ×8; FH inside-in rates higher · 1.30 pts
  2. Rally, shots 5–8: drive to your forehand side hit FH through the middle ×10; FH crosscourt rates higher · 0.51 pts
  3. Return of a 1st serve, T, deuce court hit BH slice down the line ×4; BH slice crosscourt rates higher · 0.45 pts
  4. Rally, shots 5–8: drive to your middle hit FH through the middle ×7; FH crosscourt rates higher · 0.40 pts