RallyIQ

Monastir · R32 · Hard · 4 Oct 2022

Mirra Andreeva v Anastasia Potapova

102–113 in points · Anastasia Potapova won

Why it went the way it did

Anastasia Potapova won 6.9 more points than Mirra Andreeva relative to what the serve alone predicted. Mirra Andreeva's biggest leaks: touch shot selection −6.9, slice shot selection −3.5, 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.

ShotMirra AndreevaAnastasia Potapova
DirSelExecTotalDirSelExecTotal
Serve 1st −1.1 ±0.0 −1.3 −2.3 −0.4 ±0.0 −1.5 −2.0
Serve 2nd ±0.0 ±0.0 +1.4 +1.5 +0.1 ±0.0 −0.8 −0.7
Return +0.2 +0.2 +1.2 +1.6 +0.6 +1.2 +0.7 +2.5
Forehand −0.6 +2.4 −1.2 +0.5 +0.7 +1.8 −3.7 −1.2
Backhand −0.1 +1.4 +6.4 +7.7 +1.8 +1.1 +7.7 +10.5
Slice −0.2 −3.5 +0.6 −3.1 +0.1 −0.8 −1.1 −1.7
Net +0.1 +0.3 −0.3 ±0.0 −0.1 +0.2 +0.4 +0.5
Touch +0.5 −6.9 −0.2 −6.6 ±0.0 −2.4 +0.5 −1.8
All shots −1.1−6.2 +6.6−0.7 +2.8+1.2 +2.2+6.1

Set by set

SetMirra AndreevaAnastasia PotapovaNet, Mirra
1−1.3+3.6 −4.9
2+3.7+1.4 +2.3
3−3.2+1.2 −4.3

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.

Mirra Andreeva serving

SetWideBodyT
1 21% 57% 56% 58% 24% 25%
2 42% 63% 27% 75% 31% 36%
3 24% 50% 42% 43% 33% 55%

Set to set −2.05 per 100 first serves in sets 2+

Within sets −0.91 per 100 first serves, every two to three service games

Anastasia Potapova serving

SetWideBodyT
1 37% 64% 27% 75% 37% 55%
2 51% 60% 31% 47% 18% 44%
3 36% 50% 27% 83% 36% 63%

Set to set +1.52 per 100 first serves in sets 2+

Within sets +0.21 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.

Mirra Andreeva

14.0 points left on the table across 564 shots 2.48 per 100 shots

  1. Long rally, 9+: drive to your backhand side hit BH through the middle ×24; BH crosscourt rates higher · 1.25 pts
  2. Rally, shots 5–8: drive to your backhand side hit BH through the middle ×28; BH crosscourt rates higher · 1.20 pts
  3. Rally, shots 5–8: drive to your forehand side hit FH through the middle ×13; FH crosscourt rates higher · 0.71 pts
  4. Long rally, 9+: drive to your forehand side hit FH through the middle ×10; FH crosscourt rates higher · 0.55 pts

Anastasia Potapova

10.3 points left on the table across 573 shots 1.80 per 100 shots

  1. Rally, shots 5–8: drive to your middle hit FH through the middle ×9; FH crosscourt rates higher · 0.63 pts
  2. Rally, shots 5–8: drive to your backhand side hit BH through the middle ×13; BH crosscourt rates higher · 0.56 pts
  3. Long rally, 9+: drive to your middle hit FH through the middle ×6; FH down the line rates higher · 0.42 pts
  4. Return of a 2nd serve, wide, deuce court hit FH through the middle ×3; FH inside-out rates higher · 0.34 pts