RallyIQ

Canada Masters · R32 · Hard · 6 Aug 2013

Novak Djokovic v Florian Mayer

58–37 in points · Novak Djokovic won

Why it went the way it did

Novak Djokovic won 7.5 more points than Florian Mayer relative to what the serve alone predicted. Florian Mayer's biggest leaks: backhand execution −2.3, slice shot selection −2.2, serve 1st execution −1.1.

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.

ShotNovak DjokovicFlorian Mayer
DirSelExecTotalDirSelExecTotal
Serve 1st ±0.0 +0.1 −1.1 −1.0 −0.2 +0.2 −1.1 −1.1
Serve 2nd ±0.0 ±0.0 +0.5 +0.5 ±0.0 ±0.0 −0.4 −0.4
Return ±0.0 +0.1 +0.1 +0.2 ±0.0 +0.4 ±0.0 +0.5
Forehand −0.1 +0.9 +0.9 +1.7 −0.3 +1.1 +0.5 +1.3
Backhand ±0.0 +0.2 +0.2 +0.4 +0.1 −0.3 −2.3 −2.5
Slice ±0.0 −0.9 +0.6 −0.3 +0.1 −2.2 −0.7 −2.8
Net +0.1 ±0.0 ±0.0 +0.1 −0.2 +0.3 −1.0 −0.9
Touch ±0.0 ±0.0 −0.5 −0.5 ±0.0 −0.3 −0.3 −0.5
All shots −0.1+0.3 +0.9+1.1 −0.4−0.7 −5.3−6.4

Set by set

SetNovak DjokovicFlorian MayerNet, Novak
1+0.2−3.8 +3.9
2+1.0−2.6 +3.6

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.

Novak Djokovic serving

SetWideBodyT
1 77% 61% 7% 50% 17% 100%
2 48% 54% 7% 100% 44% 75%

Set to set +0.17 per 100 first serves in sets 2+

Within sets +2.50 per 100 first serves, every two to three service games

Florian Mayer serving

SetWideBodyT
1 53% 40% 11% 100% 37% 43%
2 47% 50% 29% 60% 24% 25%

Within sets +1.80 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.

Novak Djokovic

4.2 points left on the table across 168 shots 2.48 per 100 shots

  1. Return +1: slice to your forehand side, opponent at net hit FH through the middle ×1; FH crosscourt rates higher · 0.29 pts
  2. Serve +1: short return to your forehand side, you at net hit FH volley through the middle ×1; FH volley crosscourt rates higher · 0.25 pts
  3. Rally, shots 5–8: drive to your forehand side hit FH through the middle ×4; FH crosscourt rates higher · 0.20 pts
  4. Serve +1: mid-depth return to your forehand side hit FH through the middle ×2; FH crosscourt rates higher · 0.18 pts

Florian Mayer

5.0 points left on the table across 173 shots 2.91 per 100 shots

  1. Serve +1: mid-depth return to your forehand side, you at net hit FH volley through the middle ×1; FH volley crosscourt rates higher · 0.29 pts
  2. Rally, shots 5–8: drive to your backhand side, you at net hit BH volley through the middle ×1; BH volley crosscourt rates higher · 0.26 pts
  3. Return +1: volley to your forehand side, opponent at net hit FH through the middle ×1; FH crosscourt rates higher · 0.23 pts
  4. Serve +1: short return to your middle, you at net hit BH volley through the middle ×1; BH volley crosscourt rates higher · 0.20 pts