RallyIQ

US Open · R128 · Hard · 28 Aug 2023

Stefanos Tsitsipas v Milos Raonic

92–68 in points · Stefanos Tsitsipas won

Why it went the way it did

Stefanos Tsitsipas won 13.2 more points than Milos Raonic relative to what the serve alone predicted. Milos Raonic's biggest leaks: forehand execution −7.1, serve 2nd execution −2.8, return execution −1.7.

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.

ShotStefanos TsitsipasMilos Raonic
DirSelExecTotalDirSelExecTotal
Serve 1st +0.3 +0.1 −1.2 −0.8 +0.2 ±0.0 −1.6 −1.4
Serve 2nd ±0.0 ±0.0 −1.5 −1.5 +0.2 +0.4 −2.8 −2.2
Return −0.4 −1.0 ±0.0 −1.4 +0.1 +1.0 −1.7 −0.6
Forehand +0.5 +2.1 +3.9 +6.5 +0.1 +3.2 −7.1 −3.9
Backhand ±0.0 +1.0 +0.8 +1.8 −0.1 +0.1 −0.3 −0.3
Slice +0.1 −1.0 +0.6 −0.3 +0.2 −0.9 −0.7 −1.4
Net +0.3 +0.4 −0.3 +0.3 +0.6 +0.2 +0.1 +0.9
Touch ±0.0 −0.6 −0.1 −0.7 +0.1 −0.2 −0.1 −0.2
All shots +0.8+1.1 +2.2+4.0 +1.3+3.8 −14.2−9.2

Set by set

SetStefanos TsitsipasMilos RaonicNet, Stefanos
1+1.7−3.7 +5.4
2+1.8−2.5 +4.3
3+0.6−3.0 +3.5

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.

Stefanos Tsitsipas serving

SetWideBodyT
1 46% 82% 4% 100% 50% 58%
2 65% 82% – 35% 67%
3 54% 57% – 46% 83%

Set to set +0.17 per 100 first serves in sets 2+

Within sets +0.63 per 100 first serves, every two to three service games

Milos Raonic serving

SetWideBodyT
1 52% 33% – 48% 64%
2 79% 64% 7% 0% 14% 75%
3 67% 59% 6% 50% 27% 56%

Set to set +0.22 per 100 first serves in sets 2+

Within sets −2.34 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.

Stefanos Tsitsipas

5.4 points left on the table across 209 shots 2.58 per 100 shots

  1. Return of a 1st serve, wide, ad court hit BH slice through the middle ×6; BH slice crosscourt rates higher · 0.45 pts
  2. Return +1: drive to your backhand side, opponent at net hit BH through the middle ×4; BH crosscourt rates higher · 0.28 pts
  3. Return of a 2nd serve, wide, deuce court, server rushing the net hit FH through the middle ×3; FH down the line rates higher · 0.28 pts
  4. Rally, shots 5–8: drive to your backhand side, you at net hit BH volley through the middle ×1; BH volley crosscourt rates higher · 0.26 pts

Milos Raonic

5.3 points left on the table across 230 shots 2.29 per 100 shots

  1. Rally, shots 5–8: drive to your backhand side hit FH through the middle ×3; FH inside-in rates higher · 0.28 pts
  2. Return +1: drive to your backhand side hit BH through the middle ×6; BH crosscourt rates higher · 0.23 pts
  3. Return +1: drive to your forehand side hit FH down the line ×5; FH crosscourt rates higher · 0.22 pts
  4. Rally, shots 5–8: drive to your middle, you at net hit BH volley through the middle ×1; BH volley crosscourt rates higher · 0.22 pts