RallyIQ

ATP · Left-handed · 2 charted matches · 1992–1998

Jeff Tarango

Shot expected value

The share of points Jeff Tarango 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 · 25 shots

OptionUsedWin %Tour
BH crosscourt 52% 44.0%±14.2 47.6%
BH through the middle 48% 39.8%±14.2 43.7%

Serve under pressure

Deuce court

1st serveUsageBreak ptWon when in
Wide 28% 17% ▼ 80% / 73%
Body 20% 0% ▼ 64% / 63%
T 52% 83% ▲ 69% / 75%

85 normal · 6 break-point 1st serves

Ad court

1st serveUsageBreak ptWon when in
Wide 32% 42% ▲ 67% / 73%
Body 24% 42% ▲ 58% / 63%
T 44% 17% ▼ 76% / 72%

71 normal · 12 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
Wide27% 73.5%±9.8 n=25
Body19% 65.6%±11.4 n=17
T54% 63.4%±8.9 n=49

Consistent with an optimal mix (p = 0.21).

Ad court

1st serveUsagePoints won
Wide34% 55.2%±10.7 n=28
Body27% 55.8%±11.3 n=22
T40% 58.7%±10.2 n=33

Consistent with an optimal mix (p = 0.84).

Return by serve direction

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

ServeCourtDirectionPointsWonvs tour
1stAd courtBody 2 38% +0.8±14.1
1stAd courtT 30 24% −4.0±9.1
1stAd courtWide 21 24% −3.4±9.8
1stDeuce courtBody 3 36% −0.3±13.8
1stDeuce courtT 20 25% ±0.0±10.1
1stDeuce courtWide 41 23% −4.4±8.2
2ndAd courtBody 4 47% −2.9±14.1
2ndAd courtT 15 46% −3.1±12.2
2ndAd courtWide 7 50% +1.7±13.5
2ndDeuce courtBody 4 49% +0.1±14.1
2ndDeuce courtT 5 54% +4.3±13.9
2ndDeuce courtWide 13 45% −2.9±12.5

Charted matches