RallyIQ

WTA · Left-handed · 2 charted matches · 2024–2024

Alexis Blokhina

Shot expected value

The share of points Alexis Blokhina 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 43% to the average player · 39 shots

OptionUsedWin %Tour
FH crosscourt 56% 50.8%±12.7 46.7%
FH down the line 28% 48.3%±14.8 44.9%

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

position worth 45% to the average player · 39 shots

OptionUsedWin %Tour
BH crosscourt 44% 47.4%±13.5 47.6%
BH through the middle 31% 61.4%±14.2 43.3%
BH down the line 26% 44.5%±14.9 46.8%

Rally, shots 5–8: drive to your middle

position worth 50% to the average player · 32 shots

OptionUsedWin %Tour
FH crosscourt 38% 51.7%±14.5 52.7%
FH through the middle 31% 50.5%±15.0 45.8%

Serve under pressure

Deuce court

1st serveUsageBreak ptWon when in
Wide 22% 0% ▼ 65% / 66%
Body 51% 50% 59% / 57%
T 27% 50% ▲ 65% / 68%

59 normal · 2 break-point 1st serves

Ad court

1st serveUsageBreak ptWon when in
Wide 62% 43% ▼ 68% / 66%
Body 28% 57% ▲ 51% / 56%
T 10% 0% ▼ 67% / 64%

50 normal · 7 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. A direction loses 0.19 points per 100 serves for every 10 points of habitual usage, measured from WTA 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
Wide21% 58.5%±12.4 n=13
Body51% 57.8%±10.4 n=31
T28% 55.9%±11.9 n=17

Consistent with an optimal mix (p = 0.90).

Return by serve direction

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

ServeCourtDirectionPointsWonvs tour
1stAd courtBody 8 48% +3.9±13.3
1stAd courtT 9 38% +2.1±12.8
1stAd courtWide 17 37% +2.4±11.6
1stDeuce courtBody 13 39% −3.6±12.2
1stDeuce courtT 1 31% −1.0±13.7
1stDeuce courtWide 19 35% +1.1±11.2
2ndAd courtBody 5 59% +3.6±13.7
2ndAd courtT 1 53% −1.8±14.7
2ndAd courtWide 10 50% −3.4±13.0
2ndDeuce courtBody 8 46% −8.8±13.3
2ndDeuce courtWide 16 44% −10.0±12.0

Charted matches