RallyIQ

Wimbledon · R16 · Grass · 30 Jun 2008

Stan Wawrinka v Marat Safin

105–135 in points · Marat Safin won

Why it went the way it did

Marat Safin won 13.0 more points than Stan Wawrinka relative to what the serve alone predicted. Stan Wawrinka's biggest leaks: forehand execution −11.1, net execution −3.2, 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.

ShotStan WawrinkaMarat Safin
DirSelExecTotalDirSelExecTotal
Serve 1st +0.1 −0.8 −1.5 −2.3 +0.3 −0.9 −3.1 −3.8
Serve 2nd −0.2 −0.7 −1.7 −2.6 ±0.0 −0.9 +0.7 −0.2
Return +0.1 −1.4 −1.7 −3.0 ±0.0 +0.3 +0.9 +1.3
Forehand +0.2 +2.5 −11.1 −8.4 −0.8 +2.0 −4.8 −3.6
Backhand −0.1 −1.1 −1.7 −2.9 +0.2 −0.2 −1.9 −1.9
Slice −0.1 −1.7 −1.2 −3.0 −0.1 −1.9 −1.3 −3.2
Net ±0.0 +0.1 −3.2 −3.1 ±0.0 +0.2 +0.1 +0.3
Touch −0.1 −0.4 +0.4 −0.1 +0.1 −0.6 −0.9 −1.4
All shots −0.1−3.5 −21.8−25.4 −0.2−2.1 −10.2−12.5

Set by set

SetStan WawrinkaMarat SafinNet, Stan
1−6.3−4.3 −2.0
2−8.3+0.4 −8.7
3−5.5−6.5 +1.0
4−5.4−2.1 −3.3

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.

Stan Wawrinka serving

SetWideBodyT
1 38% 60% – 62% 50%
2 46% 44% 9% 67% 46% 56%
3 49% 50% 3% 100% 49% 72%
4 38% 50% 19% 33% 44% 29%

Set to set +2.36 per 100 first serves in sets 2+

Within sets +1.37 per 100 first serves, every two to three service games

Marat Safin serving

SetWideBodyT
1 49% 71% 6% 50% 46% 56%
2 37% 57% 5% 100% 58% 100%
3 51% 53% 3% 0% 46% 71%
4 40% 64% 3% 0% 57% 65%

Set to set +0.12 per 100 first serves in sets 2+

Within sets −0.17 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.

Stan Wawrinka

9.4 points left on the table across 341 shots 2.75 per 100 shots

  1. Return of a 2nd serve, T, ad court hit FH through the middle ×8; FH inside-in rates higher · 0.76 pts
  2. Return of a 1st serve, wide, ad court hit BH slice down the line ×3; BH slice crosscourt rates higher · 0.58 pts
  3. Return of a 1st serve, wide, ad court hit BH slice through the middle ×9; BH slice crosscourt rates higher · 0.40 pts
  4. Rally, shots 5–8: drive to your forehand side hit FH through the middle ×7; FH crosscourt rates higher · 0.36 pts

Marat Safin

9.2 points left on the table across 330 shots 2.78 per 100 shots

  1. Rally, shots 5–8: drive to your middle hit FH through the middle ×9; FH crosscourt rates higher · 0.51 pts
  2. Rally, shots 5–8: drive to your forehand side hit FH through the middle ×8; FH crosscourt rates higher · 0.41 pts
  3. Return of a 2nd serve, T, ad court hit FH through the middle ×4; FH inside-in rates higher · 0.38 pts
  4. Return of a 1st serve, T, deuce court hit BH slice down the line ×3; BH slice through the middle rates higher · 0.30 pts