RallyIQ

WTA · Left-handed · 4 charted matches · 2005–2009

Patty Schnyder

Shot expected value

The share of points Patty Schnyder goes on to win after each option in the positions they face most often, shrunk toward tour average when the sample is small. Showing the 8 most-used options; teal marks the best one with at least 30 shots.

Rally, shots 5–8: drive to your backhand side

position worth 45% to the average player · 128 shots

OptionUsedWin %Tour
BH crosscourt 37% 47.0%±10.0 47.6%
BH down the line 27% 51.5%±11.1 46.8%
BH through the middle 26% 39.0%±11.0 43.3%

Rally, shots 5–8: drive to your forehand side

position worth 43% to the average player · 78 shots

OptionUsedWin %Tour
FH crosscourt 50% 44.7%±10.6 46.7%
FH down the line 28% 45.2%±12.6 44.9%
FH through the middle 22% 38.5%±13.2 41.3%

Long rally, 9+: drive to your backhand side

position worth 44% to the average player · 59 shots

OptionUsedWin %Tour
BH crosscourt 41% 44.5%±12.3 47.9%
BH down the line 22% 43.5%±14.2 46.7%
BH through the middle 17% 41.8%±14.8 42.7%

Return +1: drive to your backhand side

position worth 44% to the average player · 58 shots

OptionUsedWin %Tour
BH crosscourt 43% 45.7%±12.2 47.8%
BH through the middle 40% 40.9%±12.3 43.0%
BH down the line 17% 34.2%±14.2 46.2%

Serve under pressure

Deuce court

1st serveUsageBreak ptWon when in
Wide 45% 50% 62% / 66%
Body 7% 0% 56% / 57%
T 48% 50% 63% / 68%

134 normal · 10 break-point 1st serves

Ad court

1st serveUsageBreak ptWon when in
Wide 64% 58% 60% / 66%
Body 8% 19% ▲ 60% / 56%
T 28% 23% 65% / 64%

106 normal · 26 break-point 1st serves

Is the serve mix in equilibrium?

Game theory says a well-mixed server wins equally often with every direction they use. If one direction wins more, it's underused and points are being left behind. This is the minimax test Walker and Wooders ran on Wimbledon finals, applied to every charted first serve. Win rates include faults. "Optimal" allows for returners reading a habit. A direction loses 0.19 points per 100 serves for every 10 points of habitual usage, measured from WTA servers whose mix drifted between matches. Shifts stay within the range servers' habits actually vary, the only range that response was measured over.

Deuce court

1st serveUsagePoints won
Wide45% 55.5%±8.4 n=65
Body7% 53.7%±13.0 n=10
T48% 54.7%±8.2 n=69

Consistent with an optimal mix (p = 0.95).

Ad court

1st serveUsagePoints won
Wide63% 53.6%±7.7 n=83
Body10% 60.8%±12.2 n=13
T27% 57.3%±10.0 n=36

Consistent with an optimal mix (p = 0.41).

Repeating the previous direction to the same court: +2.2±11.4 points per 100 against switching. Negative means returners read repeats. Tour-wide, repeating costs women about 0.4 points per 100 and costs men nothing, so men's returners don't measurably anticipate direction. (102 repeats, 166 switches.)

Return by serve direction

Return points won against each serve direction, compared with the tour average.

ServeCourtDirectionPointsWonvs tour
1stAd courtBody 7 46% +2.5±13.5
1stAd courtT 51 39% +3.6±8.9
1stAd courtWide 31 30% −4.4±9.7
1stDeuce courtBody 6 38% −4.3±13.3
1stDeuce courtT 29 30% −2.2±9.8
1stDeuce courtWide 74 32% −2.1±7.5
2ndAd courtBody 12 63% +8.1±12.2
2ndAd courtT 31 48% −6.7±10.5
2ndAd courtWide 8 55% +1.9±13.3
2ndDeuce courtBody 3 56% +1.1±14.2
2ndDeuce courtT 1 57% +1.4±14.6
2ndDeuce courtWide 39 48% −5.8±9.9

Signature patterns

Recurring sequences that win more than Patty Schnyder's own baseline, ranked by edge weighted by how often they're used.

Serve → +1

  1. Not enough data

Return

  1. vs wide serve (deuce court) → BH through the middle, mid used 29.9% · won 41% · −3.9±11.6 vs own baseline

Rally, consecutive own shots

  1. FH crosscourt → BH crosscourt used 11.6% · won 48% · +6.5±11.6 vs own baseline
  2. FH crosscourt → FH crosscourt used 13.3% · won 43% · +2.0±11.1 vs own baseline
  3. FH crosscourt → FH down the line used 12.7% · won 39% · −2.9±11.1 vs own baseline

Discovered sequences

Mined from every me → opponent → me run of three shots, with no templates. Ranked by how much more often Patty Schnyder wins the point once the sequence happens, weighted by how often it happens. Think of them as chess openings.

  1. BH crosscourt → FH crosscourt → BH down the line used 2.8% · won 47% · +2.3±12.3 vs own baseline · +1.5 vs tour on the same sequence Disrupted by Amelie Mauresmo (5/10)
  2. FH crosscourt → BH down the line → BH crosscourt used 2.1% · won 46% · +0.7±13.0 vs own baseline · −2.8 vs tour on the same sequence Disrupted by Amelie Mauresmo (4/8)
  3. FH crosscourt → BH crosscourt → FH crosscourt used 2.2% · won 44% · −0.5±12.8 vs own baseline · −4.5 vs tour on the same sequence Disrupted by Amelie Mauresmo (4/8)
  4. FH crosscourt → BH crosscourt → FH down the line used 3.2% · won 44% · −0.7±11.8 vs own baseline · −4.8 vs tour on the same sequence Disrupted by Amelie Mauresmo (6/11)
  5. BH crosscourt → FH crosscourt → BH crosscourt used 2.4% · won 41% · −3.9±12.6 vs own baseline · −12.9 vs tour on the same sequence Disrupted by Amelie Mauresmo (4/9)

Strengths and vulnerabilities

Value per 100 shots compared with the average player hitting (strengths) or facing (vulnerabilities) the same shot. Only shot types seen at least 120 times.

Hurts opponents most with

FH to their backhand · rally+0.2129

Most exposed to

FH to their backhand · rally+1.4159

Active players who are best at the shot in the top weakness: Clara Burel, Victoria Jimenez Kasintseva, Sara Sorribes Tormo, Arianne Hartono, Angelique Kerber

Charted matches