RallyIQ

Wuhan · R32 · Hard · 26 Sep 2017

Lesia Tsurenko v Garbine Muguruza

60–72 in points · Garbine Muguruza won

Why it went the way it did

Garbine Muguruza won 6.4 more points than Lesia Tsurenko relative to what the serve alone predicted. Lesia Tsurenko's biggest leaks: forehand execution −1.9, slice shot selection −1.7, return execution −0.7.

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.

ShotLesia TsurenkoGarbine Muguruza
DirSelExecTotalDirSelExecTotal
Serve 1st −0.2 ±0.0 +0.4 +0.1 +0.2 ±0.0 +1.1 +1.3
Serve 2nd ±0.0 ±0.0 −0.1 −0.1 −0.1 ±0.0 +0.5 +0.4
Return −0.2 −0.6 −0.7 −1.5 +0.1 +0.8 +1.5 +2.4
Forehand −0.1 +1.4 −1.9 −0.7 +0.3 +1.8 −2.5 −0.3
Backhand ±0.0 +0.7 +1.3 +1.9 −0.1 +1.2 +0.8 +1.9
Slice −0.1 −1.7 −0.7 −2.5 ±0.0 −1.1 ±0.0 −1.0
Net +0.1 +0.2 +0.6 +0.9 ±0.0 +0.4 −0.9 −0.4
Touch ±0.0 −0.2 −0.3 −0.5 ±0.0 ±0.0 ±0.0 −0.1
All shots −0.5−0.2 −1.5−2.2 +0.5+3.1 +0.5+4.2

Set by set

SetLesia TsurenkoGarbine MuguruzaNet, Lesia
1−2.3+2.1 −4.4
2+0.1+2.1 −2.0

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.

Lesia Tsurenko serving

SetWideBodyT
1 53% 56% 18% 17% 29% 70%
2 26% 78% 37% 54% 37% 54%

Set to set −1.59 per 100 first serves in sets 2+

Within sets −0.90 per 100 first serves, every two to three service games

Garbine Muguruza serving

SetWideBodyT
1 25% 57% 7% 100% 68% 68%
2 31% 73% 11% 25% 57% 70%

Within sets +0.03 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.

Lesia Tsurenko

7.3 points left on the table across 292 shots 2.50 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 middle hit FH through the middle ×7; FH crosscourt rates higher · 0.49 pts
  3. Long rally, 9+: drive to your forehand side hit FH through the middle ×6; FH crosscourt rates higher · 0.33 pts
  4. Serve +1: deep return to your middle hit FH through the middle ×5; FH crosscourt rates higher · 0.30 pts

Garbine Muguruza

6.1 points left on the table across 287 shots 2.13 per 100 shots

  1. Rally, shots 5–8: drive to your backhand side hit BH through the middle ×10; BH crosscourt rates higher · 0.43 pts
  2. Return +1: drive to your forehand side hit FH through the middle ×5; FH crosscourt rates higher · 0.32 pts
  3. Long rally, 9+: drive to your backhand side hit BH through the middle ×6; BH crosscourt rates higher · 0.31 pts
  4. Return +1: drive to your middle hit FH through the middle ×4; FH down the line rates higher · 0.26 pts