RallyIQ

ATP · Right-handed · 3 charted matches · 1993–1996

Arnaud Boetsch

Shot expected value

The share of points Arnaud Boetsch 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 forehand side

position worth 44% to the average player · 39 shots

OptionUsedWin %Tour
FH crosscourt 49% 52.1%±13.2 46.6%
FH through the middle 26% 34.3%±14.3 41.5%

Rally, shots 5–8: drive to your middle

position worth 51% to the average player · 32 shots

OptionUsedWin %Tour
FH crosscourt 47% 55.8%±13.8 52.7%
FH through the middle 31% 54.7%±15.0 47.0%

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

position worth 46% to the average player · 27 shots

OptionUsedWin %Tour
BH through the middle 37% 49.1%±15.0 43.7%
BH crosscourt 37% 55.1%±14.9 47.6%

Serve under pressure

Deuce court

1st serveUsageBreak ptWon when in
Wide 42% 40% 80% / 73%
Body 14% 0% ▼ 67% / 63%
T 44% 60% ▲ 70% / 75%

118 normal · 5 break-point 1st serves

Ad court

1st serveUsageBreak ptWon when in
Wide 26% 27% 72% / 73%
Body 18% 7% ▼ 61% / 63%
T 56% 67% ▲ 68% / 72%

99 normal · 15 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
Wide42% 71.0%±8.2 n=52
Body13% 70.1%±11.1 n=16
T45% 62.7%±8.6 n=55

Consistent with an optimal mix (p = 0.29).

Ad court

1st serveUsagePoints won
Wide26% 55.2%±10.6 n=30
Body17% 56.1%±11.7 n=19
T57% 60.6%±8.2 n=65

Consistent with an optimal mix (p = 0.63).

Return by serve direction

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

ServeCourtDirectionPointsWonvs tour
1stAd courtBody 7 33% −4.3±12.7
1stAd courtT 19 25% −2.7±10.2
1stAd courtWide 25 29% +2.2±10.1
1stDeuce courtBody 9 38% +1.8±12.8
1stDeuce courtT 27 29% +3.9±9.9
1stDeuce courtWide 28 23% −4.5±9.0
2ndAd courtBody 11 43% −5.9±12.7
2ndAd courtT 11 43% −5.9±12.7
2ndAd courtWide 38 45% −3.5±9.9
2ndDeuce courtBody 15 50% +1.4±12.3
2ndDeuce courtT 16 45% −4.2±12.1
2ndDeuce courtWide 24 49% +0.9±11.2

Discovered sequences

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

  1. FH crosscourt → FH crosscourt → FH crosscourt used 2.9% · won 53% · +0.3±13.1 vs own baseline · +4.5 vs tour on the same sequence Disrupted by Andrei Medvedev (7/12)

Charted matches