RallyIQ

Wimbledon · R64 · Grass · 4 Jul 2024

Giovanni Mpetshi Perricard v Yoshihito Nishioka

83–49 in points · Giovanni Mpetshi Perricard won

Why it went the way it did

Giovanni Mpetshi Perricard won 17.3 more points than Yoshihito Nishioka relative to what the serve alone predicted. Yoshihito Nishioka's biggest leaks: return shot selection −1.3, return execution −1.1, slice shot selection −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.

ShotGiovanni Mpetshi PerricardYoshihito Nishioka
DirSelExecTotalDirSelExecTotal
Serve 1st +0.4 +0.1 +6.6 +7.1 −0.5 −0.1 −0.1 −0.8
Serve 2nd −0.1 ±0.0 +0.4 +0.4 −0.1 ±0.0 +0.9 +0.7
Return −0.1 +0.9 +0.8 +1.6 ±0.0 −1.3 −1.1 −2.4
Forehand +0.2 +1.9 +3.3 +5.4 +0.2 +0.9 +0.5 +1.7
Backhand −0.1 +0.4 +0.2 +0.5 −0.2 −0.4 +2.1 +1.4
Slice −0.4 −0.4 +0.7 −0.1 −0.1 −0.7 −0.6 −1.4
Net +0.2 +0.1 +0.4 +0.6 ±0.0 ±0.0 −0.2 −0.3
Touch ±0.0 −0.1 +0.3 +0.2 −0.1 −0.5 +0.2 −0.4
Other ±0.0 ±0.0 ±0.0 ±0.0 ±0.0 −0.3 ±0.0 −0.4
All shots ±0.0+2.8 +12.8+15.6 −0.8−2.6 +1.6−1.7

Set by set

SetGiovanni Mpetshi PerricardYoshihito NishiokaNet, Giovanni
1+5.0+0.4 +4.7
2+5.6−0.7 +6.3
3+4.9−1.4 +6.3

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.

Giovanni Mpetshi Perricard serving

SetWideBodyT
1 54% 85% – 46% 82%
2 57% 92% – 43% 67%
3 65% 77% – 35% 86%

Set to set +0.80 per 100 first serves in sets 2+

Within sets +0.20 per 100 first serves, every two to three service games

Yoshihito Nishioka serving

SetWideBodyT
1 45% 64% 23% 71% 32% 60%
2 36% 40% 36% 40% 29% 50%
3 36% 38% 18% 50% 45% 60%

Set to set −0.05 per 100 first serves in sets 2+

Within sets −0.16 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.

Giovanni Mpetshi Perricard

5.0 points left on the table across 160 shots 3.13 per 100 shots

  1. Return of a 1st serve, wide, ad court hit BH down the line ×3; BH crosscourt rates higher · 0.34 pts
  2. Return of a 2nd serve, T, deuce court hit FH through the middle ×3; FH inside-in rates higher · 0.31 pts
  3. Return of a 1st serve, T, deuce court hit BH down the line ×5; BH through the middle rates higher · 0.27 pts
  4. Rally, shots 5–8: drive to your backhand side hit BH slice through the middle ×3; BH slice crosscourt rates higher · 0.22 pts

Yoshihito Nishioka

4.4 points left on the table across 143 shots 3.10 per 100 shots

  1. 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
  2. Return of a 1st serve, wide, ad court hit FH down the line ×2; FH crosscourt rates higher · 0.28 pts
  3. Return of a 1st serve, wide, deuce court, server rushing the net hit BH slice through the middle ×2; BH slice crosscourt rates higher · 0.19 pts
  4. Return +1: volley to your backhand side, opponent at net hit BH through the middle ×1; BH crosscourt rates higher · 0.18 pts