RallyIQ

ATP · Right-handed · 4 charted matches · 2013–2019

Peter Polansky

Shot expected value

The share of points Peter Polansky 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 46% to the average player · 111 shots

OptionUsedWin %Tour
BH through the middle 35% 41.9%±10.6 43.7%
BH crosscourt 35% 48.3%±10.7 47.6%
BH down the line 16% 50.7%±13.3 46.4%

Long rally, 9+: drive to your backhand side

position worth 46% to the average player · 76 shots

OptionUsedWin %Tour
BH crosscourt 39% 43.2%±11.5 48.0%
BH through the middle 28% 48.2%±12.8 43.8%
BH down the line 20% 49.4%±13.9 46.5%

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

position worth 44% to the average player · 71 shots

OptionUsedWin %Tour
FH crosscourt 38% 53.9%±12.0 46.6%
FH through the middle 31% 36.4%±12.2 41.5%
FH down the line 31% 35.6%±12.2 44.7%

Rally, shots 5–8: drive to your middle

position worth 51% to the average player · 68 shots

OptionUsedWin %Tour
FH through the middle 29% 48.5%±13.0 47.0%
FH crosscourt 28% 47.5%±13.2 52.7%
FH down the line 22% 60.9%±13.6 51.5%

Serve under pressure

Deuce court

1st serveUsageBreak ptWon when in
Wide 34% 25% ▼ 69% / 73%
Body 18% 0% ▼ 70% / 63%
T 48% 75% ▲ 75% / 75%

137 normal · 8 break-point 1st serves

Ad court

1st serveUsageBreak ptWon when in
Wide 41% 39% 66% / 73%
Body 13% 9% 57% / 63%
T 47% 52% 67% / 72%

111 normal · 23 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. No measurable response (−0.05 ± 0.15 points per 100 serves for every 10 points of habitual usage), measured from ATP 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
Wide33% 55.2%±9.3 n=48
Body17% 65.0%±10.6 n=25
T50% 59.4%±8.0 n=72

Consistent with an optimal mix (p = 0.28).

Ad court

1st serveUsagePoints won
Wide40% 48.3%±9.0 n=54
Body12% 47.4%±12.1 n=16
T48% 51.1%±8.5 n=64

Consistent with an optimal mix (p = 0.79).

Repeating the previous direction to the same court: −0.5±4.3 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. (113 repeats, 158 switches.)

Return by serve direction

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

ServeCourtDirectionPointsWonvs tour
1stAd courtBody 13 40% +2.8±12.3
1stAd courtT 33 24% −3.6±8.9
1stAd courtWide 23 31% +3.3±10.4
1stDeuce courtBody 11 41% +4.8±12.7
1stDeuce courtT 39 28% +3.2±8.9
1stDeuce courtWide 38 25% −2.0±8.7
2ndAd courtBody 21 51% +1.2±11.5
2ndAd courtT 14 50% +0.2±12.4
2ndAd courtWide 25 48% −0.2±11.1
2ndDeuce courtBody 18 51% +2.5±11.9
2ndDeuce courtT 20 54% +4.1±11.6
2ndDeuce courtWide 18 53% +4.9±11.9

Discovered sequences

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

  1. BH crosscourt → BH crosscourt → BH down the line used 2.1% · won 54% · +6.9±12.7 vs own baseline · +17.1 vs tour on the same sequence Disrupted by Gael Monfils (2/6), Kei Nishikori (5/7)
  2. FH crosscourt → FH crosscourt → FH down the line used 2.1% · won 47% · −0.2±12.7 vs own baseline · +0.3 vs tour on the same sequence Disrupted by Kei Nishikori (3/6), Gael Monfils (4/8)
  3. BH crosscourt → BH crosscourt → BH crosscourt used 2.2% · won 44% · −3.6±12.5 vs own baseline · −9.5 vs tour on the same sequence Disrupted by Gael Monfils (5/9)
  4. BH crosscourt → BH crosscourt → BH through the middle used 2.0% · won 44% · −3.9±12.8 vs own baseline · −7.8 vs tour on the same sequence Disrupted by Kei Nishikori (2/9)

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

Most exposed to

BH to their backhand · rally−2.4124

Active players who are best at the shot in the top weakness: Richard Gasquet, Nishesh Basavareddy, Arthur Cazaux, Jaume Munar, Daniel Evans

Charted matches