RallyIQ

ATP · Right-handed · 2 charted matches · 2000–2000

Harel Levy

Shot expected value

The share of points Harel Levy 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 · 48 shots

OptionUsedWin %Tour
BH through the middle 38% 46.7%±13.3 43.7%
BH slice crosscourt 27% 37.9%±13.9 42.5%

Long rally, 9+: drive to your forehand side

position worth 44% to the average player · 37 shots

OptionUsedWin %Tour
FH crosscourt 43% 37.2%±13.2 46.9%
FH through the middle 32% 41.5%±14.3 41.4%

Serve under pressure

Deuce court

1st serveUsageBreak ptWon when in
Wide 43% 60% ▲ 65% / 73%
Body 16% 20% 66% / 63%
T 41% 20% ▼ 72% / 75%

63 normal · 5 break-point 1st serves

Ad court

1st serveUsageBreak ptWon when in
Wide 53% 63% ▲ 71% / 73%
Body 11% 6% 65% / 63%
T 36% 31% 71% / 72%

47 normal · 16 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
Wide44% 51.5%±10.6 n=30
Body16% 53.4%±12.8 n=11
T40% 54.2%±10.9 n=27

Consistent with an optimal mix (p = 0.91).

Ad court

1st serveUsagePoints won
Wide56% 52.4%±10.2 n=35
Body10% 56.4%±13.6 n=6
T35% 54.3%±11.4 n=22

Consistent with an optimal mix (p = 0.60).

Return by serve direction

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

ServeCourtDirectionPointsWonvs tour
1stAd courtBody 5 35% −2.4±13.2
1stAd courtT 15 30% +1.8±11.2
1stAd courtWide 13 28% +1.1±11.3
1stDeuce courtBody 3 33% −3.3±13.5
1stDeuce courtT 14 35% +10.2±11.8
1stDeuce courtWide 29 26% −1.5±9.4
2ndAd courtBody 10 52% +2.7±13.0
2ndAd courtT 3 48% −1.4±14.3
2ndAd courtWide 20 45% −3.3±11.6
2ndDeuce courtBody 12 52% +2.7±12.7
2ndDeuce courtT 15 44% −5.5±12.2

Charted matches