RallyIQ

Roland Garros · R128 · Clay · 26 May 2024

Jesper De Jong v Jack Draper

157–146 in points · Jesper De Jong won

Why it went the way it did

Jesper De Jong won 4.3 more points than Jack Draper relative to what the serve alone predicted. Jack Draper's biggest leaks: serve 1st execution −4.5, return execution −2.9, slice shot selection −2.1.

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.

ShotJesper De JongJack Draper
DirSelExecTotalDirSelExecTotal
Serve 1st +0.3 +0.3 −4.1 −3.6 −0.1 +0.1 −4.5 −4.5
Serve 2nd −0.4 −0.1 +0.8 +0.3 ±0.0 −0.1 −1.4 −1.5
Return −0.4 −0.5 −2.1 −3.0 −0.1 +0.3 −2.9 −2.6
Forehand +1.0 +8.9 +1.0 +10.9 +0.6 +5.0 −1.9 +3.7
Backhand −0.9 +0.7 +5.1 +4.9 ±0.0 +0.4 +5.4 +5.8
Slice −0.3 −2.8 +0.2 −2.9 −0.4 −2.1 −0.3 −2.8
Net +0.3 ±0.0 −0.6 −0.3 +0.2 +0.7 −0.3 +0.5
Touch −0.3 −1.5 −0.5 −2.4 −0.1 −0.5 +0.9 +0.4
Other ±0.0 −0.3 −0.2 −0.5 ±0.0 ±0.0 ±0.0 ±0.0
All shots −0.7+4.6 −0.5+3.4 +0.3+3.8 −5.0−0.9

Set by set

SetJesper De JongJack DraperNet, Jesper
1+2.3−1.2 +3.5
2±0.0−2.8 +2.7
3−0.5+1.3 −1.9
4+0.6+3.0 −2.4
5+1.0−1.3 +2.3

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.

Jesper De Jong serving

SetWideBodyT
1 33% 89% 11% 33% 56% 80%
2 35% 44% 8% 100% 58% 73%
3 38% 33% 8% 100% 55% 64%
4 36% 56% 16% 25% 48% 67%
5 53% 79% – 47% 47%

Set to set −0.73 per 100 first serves in sets 2+

Within sets +0.31 per 100 first serves, every two to three service games

Jack Draper serving

SetWideBodyT
1 35% 55% 13% 50% 52% 75%
2 56% 50% 9% 100% 34% 55%
3 38% 71% 14% 60% 49% 50%
4 54% 71% 8% 50% 38% 60%
5 36% 50% 23% 20% 41% 78%

Set to set +0.16 per 100 first serves in sets 2+

Within sets −0.23 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.

Jesper De Jong

16.3 points left on the table across 598 shots 2.72 per 100 shots

  1. Return of a 1st serve, T, ad court hit FH through the middle ×7; FH inside-in rates higher · 1.14 pts
  2. Rally, shots 5–8: drive to your forehand side hit FH through the middle ×11; FH crosscourt rates higher · 0.56 pts
  3. Rally, shots 5–8: drive to your backhand side hit BH through the middle ×14; BH crosscourt rates higher · 0.54 pts
  4. Serve +1: mid-depth return to your middle hit FH through the middle ×5; FH crosscourt rates higher · 0.43 pts

Jack Draper

15.9 points left on the table across 597 shots 2.66 per 100 shots

  1. Return of a 2nd serve, T, ad court hit BH through the middle ×8; BH inside-in rates higher · 0.94 pts
  2. Rally, shots 5–8: drive to your backhand side hit BH through the middle ×15; BH crosscourt rates higher · 0.58 pts
  3. Return of a 2nd serve, T, ad court hit BH crosscourt ×5; BH inside-in rates higher · 0.57 pts
  4. Return of a 1st serve, wide, ad court hit FH crosscourt ×6; FH inside-out rates higher · 0.52 pts