RallyIQ

Miami Masters · F · Hard · 30 Mar 2003

Andre Agassi v Carlos Moya

64–44 in points · Andre Agassi won

Why it went the way it did

Andre Agassi won 9.7 more points than Carlos Moya relative to what the serve alone predicted. Carlos Moya's biggest leaks: return execution −1.8, slice shot selection −1.4, serve 1st execution −1.4.

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.

ShotAndre AgassiCarlos Moya
DirSelExecTotalDirSelExecTotal
Serve 1st ±0.0 −0.2 +1.9 +1.7 −0.7 −0.2 −1.4 −2.3
Serve 2nd ±0.0 ±0.0 +0.2 +0.2 ±0.0 −0.1 +1.0 +1.0
Return +0.1 +0.2 +0.7 +1.0 ±0.0 +0.3 −1.8 −1.4
Forehand +0.4 +1.7 +4.3 +6.4 +0.5 +1.2 +1.2 +2.9
Backhand +0.3 +0.4 −1.0 −0.3 +0.3 +1.2 +0.3 +1.9
Slice +0.1 −0.5 −0.4 −0.8 +0.3 −1.4 +0.3 −0.8
Net +0.4 −0.2 +0.8 +1.1 ±0.0 ±0.0 −0.6 −0.7
Touch ±0.0 −0.3 +0.4 +0.1 −0.1 −0.6 −0.1 −0.8
All shots +1.5+1.1 +6.7+9.3 +0.3+0.4 −1.1−0.4

Set by set

SetAndre AgassiCarlos MoyaNet, Andre
1+4.9+1.5 +3.4
2+4.4−1.9 +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.

Andre Agassi serving

SetWideBodyT
1 42% 57% 9% 33% 48% 88%
2 36% 63% 5% 0% 59% 92%

Set to set +1.77 per 100 first serves in sets 2+

Within sets +0.70 per 100 first serves, every two to three service games

Carlos Moya serving

SetWideBodyT
1 31% 56% 38% 64% 31% 56%
2 33% 38% 33% 63% 33% 50%

Set to set +0.28 per 100 first serves in sets 2+

Within sets +0.55 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.

Andre Agassi

3.2 points left on the table across 206 shots 1.55 per 100 shots

  1. Rally, shots 5–8: drive to your forehand side hit FH down the line ×9; FH crosscourt rates higher · 0.16 pts
  2. Rally, shots 5–8: drive to your forehand side hit FH through the middle ×3; FH crosscourt rates higher · 0.15 pts
  3. Long rally, 9+: drive to your backhand side, opponent at net hit BH down the line ×2; BH crosscourt rates higher · 0.14 pts
  4. Rally, shots 5–8: drive to your forehand side, you at net hit FH volley down the line ×1; FH volley crosscourt rates higher · 0.14 pts

Carlos Moya

3.9 points left on the table across 204 shots 1.91 per 100 shots

  1. Rally, shots 5–8: lob to your backhand side, you at net hit Smash through the middle ×1; Smash inside-in rates higher · 0.21 pts
  2. Serve +1: mid-depth return to your forehand side hit FH through the middle ×2; FH crosscourt rates higher · 0.18 pts
  3. Rally, shots 5–8: drive to your forehand side hit FH through the middle ×3; FH crosscourt rates higher · 0.15 pts
  4. Rally, shots 5–8: drive to your backhand side hit FH inside-out ×5; FH inside-in rates higher · 0.14 pts