RallyIQ

Lyon · QF · Hard · 11 Oct 2002

Gustavo Kuerten v Marat Safin

93–99 in points · Gustavo Kuerten won

Why it went the way it did

Marat Safin won 4.1 more points than Gustavo Kuerten relative to what the serve alone predicted. Gustavo Kuerten's biggest leaks: return execution −4.8, forehand execution −1.8, backhand execution −1.7.

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.

ShotGustavo KuertenMarat Safin
DirSelExecTotalDirSelExecTotal
Serve 1st +0.4 −0.2 +1.5 +1.7 +0.2 +0.4 +3.3 +3.9
Serve 2nd +0.1 ±0.0 +0.5 +0.6 −0.1 ±0.0 +0.2 +0.1
Return −0.2 −0.6 −4.8 −5.6 +0.5 +0.3 −1.6 −0.9
Forehand +0.3 +0.8 −1.8 −0.7 −0.3 +1.7 +0.1 +1.5
Backhand ±0.0 +0.2 −1.7 −1.5 ±0.0 +0.3 −1.6 −1.3
Slice ±0.0 −0.8 −0.3 −1.0 −0.2 −1.7 −1.1 −2.9
Net +0.5 ±0.0 +2.4 +2.9 −0.2 +0.4 +1.0 +1.1
Touch ±0.0 −0.4 +1.3 +0.8 +0.1 −0.2 +0.3 +0.2
Other ±0.0 ±0.0 ±0.0 ±0.0 ±0.0 −0.5 +0.1 −0.5
All shots +1.0−1.0 −2.8−2.8 ±0.0+0.6 +0.7+1.3

Set by set

SetGustavo KuertenMarat SafinNet, Gustavo
1+2.8+1.5 +1.4
2−4.4+1.4 −5.8
3−1.2−1.6 +0.4

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 68% 67% – 32% 100%
2 34% 60% – 66% 63%
3 54% 64% 2% 100% 44% 89%

Set to set +3.06 per 100 first serves in sets 2+

Within sets +1.99 per 100 first serves, every two to three service games

Marat Safin serving

SetWideBodyT
1 37% 82% – 63% 68%
2 35% 100% 9% 100% 57% 77%
3 41% 80% – 59% 73%

Set to set +0.87 per 100 first serves in sets 2+

Within sets −0.21 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

6.0 points left on the table across 251 shots 2.38 per 100 shots

  1. Rally, shots 5–8: drive to your middle hit FH through the middle ×4; FH crosscourt rates higher · 0.23 pts
  2. Return of a 1st serve, wide, ad court hit BH slice through the middle ×3; BH slice crosscourt rates higher · 0.23 pts
  3. Rally, shots 5–8: drive to your middle, you at net hit FH volley through the middle ×1; FH volley crosscourt rates higher · 0.22 pts
  4. Return of a 2nd serve, T, deuce court hit BH through the middle + approach ×1; BH down the line + approach rates higher · 0.22 pts

Marat Safin

6.7 points left on the table across 262 shots 2.58 per 100 shots

  1. Return of a 2nd serve, wide, ad court hit BH through the middle ×7; BH crosscourt rates higher · 0.39 pts
  2. Rally, shots 5–8: drive to your middle hit FH through the middle ×5; FH crosscourt rates higher · 0.28 pts
  3. 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
  4. Return +1: drop shot to your forehand side, opponent at net hit FH through the middle ×1; FH down the line rates higher · 0.27 pts