RallyIQ

Seoul · QF · Hard · 30 Sep 2022

Radu Albot v Denis Shapovalov

41–62 in points · Denis Shapovalov won

Why it went the way it did

Denis Shapovalov won 13.6 more points than Radu Albot relative to what the serve alone predicted. Radu Albot's biggest leaks: slice shot selection −1.5, forehand execution −1.1, net direction choices −0.8.

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.

ShotRadu AlbotDenis Shapovalov
DirSelExecTotalDirSelExecTotal
Serve 1st +0.2 ±0.0 +0.4 +0.7 +0.2 ±0.0 +3.3 +3.4
Serve 2nd ±0.0 ±0.0 +1.6 +1.6 ±0.0 ±0.0 +1.3 +1.3
Return ±0.0 +0.1 +1.5 +1.7 −0.1 +0.4 +4.0 +4.4
Forehand −0.6 +0.9 −1.1 −0.8 −0.1 +1.5 +2.2 +3.6
Backhand −0.6 −0.1 −0.2 −0.9 −0.2 +0.1 −1.5 −1.6
Slice −0.5 −1.5 −0.3 −2.3 −0.1 −0.5 +0.8 +0.3
Net −0.8 −0.1 +1.7 +0.9 −0.4 ±0.0 +2.1 +1.7
Touch −0.3 −0.3 −0.6 −1.1 ±0.0 ±0.0 ±0.0 +0.1
All shots −2.5−0.9 +3.0−0.4 −0.6+1.6 +12.2+13.2

Set by set

SetRadu AlbotDenis ShapovalovNet, Radu
1−0.6+7.1 −7.7
2+0.2+6.1 −5.9

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.

Radu Albot serving

SetWideBodyT
1 57% 40% 3% 100% 40% 64%
2 63% 53% – 37% 50%

Set to set −0.94 per 100 first serves in sets 2+

Within sets −1.45 per 100 first serves, every two to three service games

Denis Shapovalov serving

SetWideBodyT
1 50% 60% – 50% 100%
2 67% 86% – 33% 57%

Within sets −1.61 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.

Radu Albot

7.5 points left on the table across 140 shots 5.34 per 100 shots

  1. Serve +1: drive to your middle hit BH through the middle ×11; BH crosscourt rates higher · 0.94 pts
  2. Serve +1: drive to your middle hit FH through the middle ×6; FH crosscourt rates higher · 0.74 pts
  3. Rally, shots 5–8: drive to your middle, you at net hit FH volley through the middle ×2; FH volley crosscourt rates higher · 0.43 pts
  4. Rally, shots 5–8: drive to your forehand side hit FH through the middle ×6; FH crosscourt rates higher · 0.30 pts

Denis Shapovalov

6.3 points left on the table across 162 shots 3.90 per 100 shots

  1. Return of a 2nd serve, T, ad court hit BH through the middle ×8; BH inside-in rates higher · 0.68 pts
  2. Return of a 1st serve, T, deuce court hit FH through the middle ×4; FH inside-out rates higher · 0.42 pts
  3. Return of a 1st serve, wide, ad court hit FH through the middle ×3; FH inside-out rates higher · 0.31 pts
  4. Return +1: drive to your middle hit FH through the middle ×5; FH crosscourt rates higher · 0.30 pts