RallyIQ

Doha · QF · Hard · 7 Jan 2016

Leonardo Mayer v Novak Djokovic

52–70 in points · Novak Djokovic won

Why it went the way it did

Novak Djokovic won 9.5 more points than Leonardo Mayer relative to what the serve alone predicted. Leonardo Mayer's biggest leaks: slice shot selection −2.2, serve 2nd execution −1.7, serve 1st execution −1.3.

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.

ShotLeonardo MayerNovak Djokovic
DirSelExecTotalDirSelExecTotal
Serve 1st −0.1 ±0.0 −1.3 −1.3 −0.5 −0.1 −1.0 −1.5
Serve 2nd +0.1 ±0.0 −1.7 −1.7 ±0.0 ±0.0 +1.3 +1.3
Return ±0.0 −0.3 +0.8 +0.5 +0.3 +0.2 +3.7 +4.2
Forehand +0.1 +2.7 +1.2 +4.1 +0.6 +1.9 +0.5 +2.9
Backhand +0.2 +1.1 +0.3 +1.6 ±0.0 +0.6 +4.0 +4.6
Slice −0.2 −2.2 ±0.0 −2.4 ±0.0 −1.1 +0.4 −0.8
Net +0.4 +1.4 −0.9 +0.9 +0.2 +0.6 −0.5 +0.3
Touch −0.1 ±0.0 +0.1 −0.1 +0.1 +0.1 −0.3 −0.1
All shots +0.3+2.7 −1.5+1.5 +0.7+2.2 +8.1+11.0

Set by set

SetLeonardo MayerNovak DjokovicNet, Leonardo
1−0.2+3.1 −3.3
2+1.7+7.9 −6.2

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.

Leonardo Mayer serving

SetWideBodyT
1 64% 56% 14% 25% 21% 33%
2 47% 35% 14% 80% 39% 64%

Set to set −1.24 per 100 first serves in sets 2+

Within sets −0.43 per 100 first serves, every two to three service games

Novak Djokovic serving

SetWideBodyT
1 38% 50% 27% 71% 35% 56%
2 45% 79% 23% 71% 32% 60%

Within sets −2.65 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.

Leonardo Mayer

6.3 points left on the table across 274 shots 2.30 per 100 shots

  1. Rally, shots 5–8: drive to your backhand side hit BH slice through the middle ×4; BH slice crosscourt rates higher · 0.29 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: volley to your forehand side, opponent at net hit FH through the middle ×1; FH crosscourt rates higher · 0.24 pts
  4. Return +1: drive to your forehand side hit FH through the middle ×4; FH crosscourt rates higher · 0.23 pts

Novak Djokovic

4.8 points left on the table across 268 shots 1.77 per 100 shots

  1. Rally, shots 5–8: drive to your backhand side hit BH through the middle ×9; BH crosscourt rates higher · 0.35 pts
  2. Long rally, 9+: drive to your forehand side hit FH through the middle ×5; FH crosscourt rates higher · 0.27 pts
  3. Rally, shots 5–8: volley to your backhand side, opponent at net hit BH slice through the middle ×1; BH slice down the line rates higher · 0.19 pts
  4. Return +1: drive to your forehand side hit FH through the middle ×3; FH crosscourt rates higher · 0.18 pts