RallyIQ

ATP · Right-handed · 2 charted matches · 2022–2024

Daniel Michalski

Shot expected value

The share of points Daniel Michalski 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 · 74 shots

OptionUsedWin %Tour
BH crosscourt 32% 44.4%±12.3 47.6%
BH through the middle 30% 56.5%±12.6 43.7%
FH inside-out 23% 57.8%±13.4 51.8%

Long rally, 9+: drive to your backhand side

position worth 46% to the average player · 54 shots

OptionUsedWin %Tour
BH crosscourt 46% 52.4%±12.2 48.0%
BH through the middle 30% 41.0%±13.5 43.8%

Serve under pressure

Deuce court

1st serveUsageBreak ptWon when in
Wide 28% 50% ▲ 69% / 73%
Body 15% 25% ▲ 63% / 63%
T 57% 25% ▼ 66% / 75%

68 normal · 4 break-point 1st serves

Ad court

1st serveUsageBreak ptWon when in
Wide 56% 69% ▲ 64% / 73%
Body 13% 6% 67% / 63%
T 31% 25% 75% / 72%

52 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
Wide29% 48.9%±11.5 n=21
Body15% 55.7%±12.8 n=11
T56% 50.7%±9.8 n=40

Consistent with an optimal mix (p = 0.47).

Ad court

1st serveUsagePoints won
Wide59% 59.1%±9.7 n=40
Body12% 63.6%±12.8 n=8
T29% 59.5%±11.4 n=20

Consistent with an optimal mix (p = 0.66).

Return by serve direction

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

ServeCourtDirectionPointsWonvs tour
1stAd courtT 10 26% −2.0±11.4
1stAd courtWide 23 25% −2.4±9.8
1stDeuce courtBody 3 33% −3.3±13.5
1stDeuce courtT 17 25% −0.6±10.3
1stDeuce courtWide 12 29% +1.8±11.5
2ndAd courtBody 2 53% +3.2±14.5
2ndAd courtWide 21 52% +3.6±11.5
2ndDeuce courtBody 2 49% +0.1±14.5
2ndDeuce courtT 20 60% +10.1±11.4
2ndDeuce courtWide 8 56% +8.3±13.2

Charted matches