RallyIQ

Doha · F · Hard · 7 Jan 1995

Magnus Larsson v Stefan Edberg

59–76 in points · Stefan Edberg won

Why it went the way it did

Stefan Edberg won 10.4 more points than Magnus Larsson relative to what the serve alone predicted. Magnus Larsson's biggest leaks: backhand execution −2.9, touch execution −2.3, touch shot selection −1.8.

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.

ShotMagnus LarssonStefan Edberg
DirSelExecTotalDirSelExecTotal
Serve 1st ±0.0 −1.1 +1.1 ±0.0 −0.7 +1.2 −0.5 −0.1
Serve 2nd ±0.0 −0.5 +0.9 +0.4 −0.1 +0.3 +0.4 +0.6
Return ±0.0 −0.1 −1.5 −1.6 +0.4 +0.2 −0.8 −0.2
Forehand ±0.0 +0.7 −0.2 +0.6 −0.3 ±0.0 −0.3 −0.6
Backhand +0.2 +0.1 −2.9 −2.6 ±0.0 +0.6 +0.4 +0.9
Slice +0.2 −1.4 −1.2 −2.3 +0.3 −1.1 −0.3 −1.2
Net +0.3 +0.2 +1.8 +2.4 −0.5 +0.6 +3.1 +3.1
Touch −0.1 −1.8 −2.3 −4.1 +0.1 −0.2 +0.7 +0.6
All shots +0.7−3.8 −4.2−7.3 −1.1+1.5 +2.7+3.1

Set by set

SetMagnus LarssonStefan EdbergNet, Magnus
1−2.7+0.2 −2.9
2−4.5+2.9 −7.5

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.

Magnus Larsson serving

SetWideBodyT
1 44% 76% 3% 100% 54% 67%
2 38% 58% 19% 50% 44% 36%

Set to set +1.35 per 100 first serves in sets 2+

Within sets +1.37 per 100 first serves, every two to three service games

Stefan Edberg serving

SetWideBodyT
1 42% 80% 31% 91% 28% 70%
2 32% 63% 24% 67% 44% 82%

Set to set −1.01 per 100 first serves in sets 2+

Within sets −0.20 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.

Magnus Larsson

6.8 points left on the table across 213 shots 3.21 per 100 shots

  1. Return +1: volley to your backhand side, opponent at net hit BH lob through the middle ×5; BH lob crosscourt rates higher · 0.48 pts
  2. Return of a 1st serve, body, deuce court, server rushing the net hit BH through the middle ×4; BH crosscourt rates higher · 0.27 pts
  3. Serve +1: mid-depth return to your forehand side, opponent at net hit FH through the middle ×1; FH crosscourt rates higher · 0.24 pts
  4. Serve +1: short return to your middle, you at net hit BH slice down the line ×1; BH slice crosscourt rates higher · 0.23 pts

Stefan Edberg

8.6 points left on the table across 216 shots 4.00 per 100 shots

  1. Rally, shots 5–8: slice to your forehand side, you at net hit FH volley through the middle ×3; FH volley crosscourt rates higher · 0.88 pts
  2. Serve +1: mid-depth return to your middle, you at net hit FH volley through the middle ×3; FH volley crosscourt rates higher · 0.73 pts
  3. Rally, shots 5–8: drive to your backhand side, you at net hit BH volley down the line ×3; BH volley crosscourt rates higher · 0.36 pts
  4. Serve +1: mid-depth return to your forehand side, you at net hit FH volley through the middle ×1; FH volley crosscourt rates higher · 0.29 pts