RallyIQ

Roland Garros · Q1 · Clay · 19 May 2026

Daphnee Mpetshi Perricard v Bianca Andreescu

60–79 in points · Bianca Andreescu won

Why it went the way it did

Bianca Andreescu won 9.6 more points than Daphnee Mpetshi Perricard relative to what the serve alone predicted. Daphnee Mpetshi Perricard's biggest leaks: slice shot selection −2.3, serve 1st execution −1.4, forehand direction choices −0.9.

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.

ShotDaphnee Mpetshi PerricardBianca Andreescu
DirSelExecTotalDirSelExecTotal
Serve 1st −0.1 ±0.0 −1.4 −1.5 −0.3 +0.1 +1.9 +1.6
Serve 2nd −0.1 ±0.0 +1.1 +1.0 ±0.0 ±0.0 +0.6 +0.6
Return −0.1 −0.2 +1.2 +0.8 +0.4 −0.6 +1.7 +1.5
Forehand −0.9 +1.7 −0.4 +0.4 +0.6 +4.7 −0.9 +4.4
Backhand +0.3 +1.0 +0.8 +2.1 +0.2 +0.8 +1.0 +2.0
Slice −0.2 −2.3 +0.9 −1.6 −0.3 −2.3 −0.8 −3.4
Net −0.2 +0.2 −0.2 −0.2 +0.6 +0.9 +0.6 +2.1
Touch −0.1 −0.6 +0.6 −0.1 −0.2 ±0.0 +1.8 +1.6
All shots −1.5−0.2 +2.6+0.9 +1.0+3.5 +5.9+10.4

Set by set

SetDaphnee Mpetshi PerricardBianca AndreescuNet, Daphnee
1+2.1+5.1 −3.0
2−1.2+5.3 −6.6

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.

Daphnee Mpetshi Perricard serving

SetWideBodyT
1 21% 50% 29% 63% 50% 36%
2 28% 69% 24% 27% 48% 50%

Within sets −0.12 per 100 first serves, every two to three service games

Bianca Andreescu serving

SetWideBodyT
1 43% 56% 38% 71% 19% 29%
2 37% 60% 37% 80% 26% 71%

Set to set +0.08 per 100 first serves in sets 2+

Within sets −0.52 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.

Daphnee Mpetshi Perricard

8.7 points left on the table across 284 shots 3.06 per 100 shots

  1. Rally, shots 5–8: drive to your forehand side hit FH through the middle ×9; FH crosscourt rates higher · 0.49 pts
  2. Rally, shots 5–8: drive to your backhand side hit BH through the middle ×10; BH crosscourt rates higher · 0.43 pts
  3. Rally, shots 5–8: drive to your middle hit FH through the middle ×4; FH crosscourt rates higher · 0.28 pts
  4. Return +1: drive to your forehand side hit FH through the middle ×4; FH crosscourt rates higher · 0.25 pts

Bianca Andreescu

7.3 points left on the table across 301 shots 2.41 per 100 shots

  1. Rally, shots 5–8: drive to your backhand side hit BH slice down the line ×5; BH slice crosscourt rates higher · 0.44 pts
  2. Rally, shots 5–8: slice to your forehand side, you at net hit FH volley through the middle ×1; FH volley crosscourt rates higher · 0.34 pts
  3. Rally, shots 5–8: drive to your middle hit FH through the middle ×4; FH crosscourt rates higher · 0.28 pts
  4. Return +1: drive to your backhand side hit BH through the middle ×5; BH crosscourt rates higher · 0.24 pts