RallyIQ

WTA · Left-handed · 6 charted matches · 2020–2026

Storm Hunter

Against an average opponent

Serve points won 56.6% ±3.7 raw 57.0% · tour 56.3% · 454 points
Return points won 44.0% ±3.8 raw 43.0% · tour 43.7% · 454 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.

Value per 100 shots

Direction choice −0.11 ±0.13 better than 35% of WTA · raw −0.08
Shot selection +0.49 ±0.33 better than 95% of WTA · raw +0.55
Execution +0.06 ±1.12 better than 64% of WTA · raw +0.48

Points gained per 100 shots compared with an average tour player in the same position, adjusted for the strength of the opponents faced, with a 90% margin (shots clustered by match). Raw is before the opponent adjustment. Built on 2,150 shots.

Shot expected value

The share of points Storm Hunter 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 · 112 shots

OptionUsedWin %Tour
BH crosscourt 40% 45.4%±10.2 47.6%
BH through the middle 33% 45.0%±10.8 43.3%
BH down the line 20% 50.8%±12.7 46.8%

Rally, shots 5–8: drive to your middle

position worth 50% to the average player · 107 shots

OptionUsedWin %Tour
FH crosscourt 27% 46.0%±11.7 52.7%
BH crosscourt 23% 58.2%±12.1 50.9%
FH down the line 18% 52.4%±13.2 52.2%
BH through the middle 16% 43.9%±13.4 46.2%
FH through the middle 11% 47.3%±14.5 45.8%

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

position worth 43% to the average player · 101 shots

OptionUsedWin %Tour
FH crosscourt 36% 47.1%±11.0 46.7%
FH through the middle 35% 42.3%±11.0 41.3%
FH down the line 30% 54.0%±11.6 44.9%

Return +1: drive to your middle

position worth 50% to the average player · 66 shots

OptionUsedWin %Tour
FH crosscourt 41% 52.1%±12.0 52.3%
FH through the middle 18% 47.8%±14.5 46.5%
FH down the line 18% 55.0%±14.5 53.0%

Serve under pressure

Pressure predictability index +12 How much less varied Storm Hunter's first-serve direction gets on break points. Positive means easier to read. Based on 45 break-point first serves.

Deuce court

1st serveUsageBreak ptWon when in
Wide 28% 13% ▼ 63% / 66%
Body 18% 25% 50% / 57%
T 54% 63% ▲ 64% / 68%

227 normal · 8 break-point 1st serves

Ad court

1st serveUsageBreak ptWon when in
Wide 40% 38% 72% / 66%
Body 25% 11% ▼ 61% / 56%
T 36% 51% ▲ 64% / 64%

182 normal · 37 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 wonOptimal
Wide28% 51.6%±8.4 n=65 42% ▲
Body18% 42.9%±9.6 n=42 3% ▼
T54% 55.4%±6.5 n=128 55%

Consistent with an optimal mix (p = 0.09).
Optimal mix: +0.8 per 100 first serves.

Ad court

1st serveUsagePoints wonOptimal
Wide39% 68.9%±7.1 n=86 54% ▲
Body22% 63.7%±8.9 n=49 7% ▼
T38% 56.5%±7.6 n=84 39%

Consistent with an optimal mix (p = 0.05).
Optimal mix: +0.9 per 100 first serves.

Exploitability 0.83 points per 100 first serves What the optimal mix would win over the current one, both courts. More exploitable than 100% of WTA servers. Tested on matches they weren't fitted on, WTA mixes picked this way win 0.42 per 100 first serves on average.

Repeating the previous direction to the same court: +6.0±3.7 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. (141 repeats, 301 switches.)

Return by serve direction

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

ServeCourtDirectionPointsWonvs tour
1stAd courtBody 33 40% −3.9±10.2
1stAd courtT 50 33% −2.2±8.7
1stAd courtWide 54 28% −6.7±8.0
1stDeuce courtBody 47 46% +3.9±9.3
1stDeuce courtT 42 29% −3.5±8.8
1stDeuce courtWide 63 39% +4.9±8.3
2ndAd courtBody 37 53% −2.0±10.0
2ndAd courtT 25 63% +7.7±10.7
2ndAd courtWide 18 56% +2.8±11.8
2ndDeuce courtBody 45 55% +0.7±9.4
2ndDeuce courtT 13 53% −3.0±12.5
2ndDeuce courtWide 27 55% +0.8±10.8

Signature patterns

Recurring sequences that win more than Storm Hunter's own baseline, ranked by edge weighted by how often they're used.

Serve → +1

  1. Wide serve (ad court) → FH crosscourt used 9.2% · won 70% · +1.0±10.4 vs own baseline

Return

  1. Not enough data

Rally, consecutive own shots

  1. Not enough data

Strengths and vulnerabilities

Value per 100 shots compared with the average player hitting (strengths) or facing (vulnerabilities) the same shot. Only shot types seen at least 120 times.

Hurts opponents most with

T 1st serve · deuce court−0.8128

Most exposed to

Charted matches