RallyIQ

WTA · Right-handed · 6 charted matches · 2015–2024

Aleksandra Krunic

Against an average opponent

Serve points won 54.5% ±3.9 raw 52.8% · tour 56.3% · 377 points
Return points won 40.2% ±3.8 raw 33.7% · tour 43.7% · 353 points

Serve and return points won, refitted against every opponent at once so a record built on weak or strong opposition is put on the same scale. Career, all surfaces, with a 90% margin. Raw is the plain share of points won.

Shot expected value

The share of points Aleksandra Krunic 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 45% to the average player · 76 shots

OptionUsedWin %Tour
BH crosscourt 39% 49.0%±11.6 47.6%
BH through the middle 20% 50.5%±13.9 43.3%
BH slice crosscourt 20% 40.2%±13.6 40.4%

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

position worth 43% to the average player · 65 shots

OptionUsedWin %Tour
FH down the line 45% 36.7%±11.3 44.9%
FH crosscourt 29% 39.4%±12.9 46.7%
FH through the middle 26% 35.8%±13.0 41.3%

Rally, shots 5–8: drive to your middle

position worth 50% to the average player · 54 shots

OptionUsedWin %Tour
FH crosscourt 37% 43.9%±12.9 52.7%
FH through the middle 26% 47.5%±14.1 45.8%
FH down the line 19% 54.8%±14.9 52.2%

Serve +1: mid-depth return to your middle

position worth 51% to the average player · 53 shots

OptionUsedWin %Tour
FH crosscourt 28% 62.3%±13.5 54.0%
FH down the line 25% 53.5%±14.3 53.3%
BH crosscourt 23% 45.3%±14.5 52.5%

Serve under pressure

Pressure predictability index +6 How much less varied Aleksandra Krunic's first-serve direction gets on break points. Positive means easier to read. Based on 47 break-point first serves.

Deuce court

1st serveUsageBreak ptWon when in
Wide 40% 43% 58% / 66%
Body 19% 43% ▲ 52% / 57%
T 41% 14% ▼ 67% / 68%

187 normal · 7 break-point 1st serves

Ad court

1st serveUsageBreak ptWon when in
Wide 41% 55% ▲ 52% / 66%
Body 19% 18% 56% / 56%
T 39% 28% ▼ 60% / 64%

140 normal · 40 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
Wide40% 54.3%±7.9 n=77
Body20% 51.3%±9.9 n=39
T40% 50.3%±7.9 n=78

Consistent with an optimal mix (p = 0.76).

Ad court

1st serveUsagePoints won
Wide44% 54.7%±7.8 n=80
Body19% 56.7%±10.2 n=34
T37% 52.7%±8.4 n=66

Consistent with an optimal mix (p = 0.78).

Repeating the previous direction to the same court: −13.1±9.0 points per 100 against switching. Negative means returners read repeats. Tour-wide, repeating costs women about 0.4 points per 100 and costs men nothing, so men's returners don't measurably anticipate direction. (133 repeats, 229 switches.)

Return by serve direction

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

ServeCourtDirectionPointsWonvs tour
1stAd courtBody 19 35% −8.9±11.2
1stAd courtT 39 30% −5.6±9.1
1stAd courtWide 49 33% −1.1±8.7
1stDeuce courtBody 30 35% −8.0±10.1
1stDeuce courtT 37 35% +3.2±9.6
1stDeuce courtWide 42 27% −7.3±8.6
2ndAd courtBody 24 51% −4.1±11.2
2ndAd courtT 12 54% −1.4±12.7
2ndAd courtWide 24 54% +0.3±11.2
2ndDeuce courtBody 36 44% −10.0±10.1
2ndDeuce courtT 18 48% −8.5±11.9
2ndDeuce courtWide 23 47% −6.4±11.3

Charted matches