RallyIQ

Game plan

Harriet Dart v Rebecca Sramkova

Every number combines what Harriet Dart does well with what Rebecca Sramkova allows, each measured against the tour average and shrunk toward it when the sample is thin. Flip perspective

Forecast

Harriet Dart wins, best of 3 32%90%: 5%–75% · best of 5: 28%
Serve points won 54.2% / 57.7% Harriet / Rebecca · tour 58.1%
Strengths only, no similarity priors 36%serve 54.9% / 57.6%

Each player's serve and return strength is fitted against every opponent they were charted against, so a record built on weak opponents counts for less. At least one of them is no longer active or has too little charted in the last three seasons, so both are compared on their careers. The result is then nudged by Harriet Dart's record against Rebecca Sramkova's tactical lookalikes and in their charted head-to-heads (lookalikes: −11.4 on serve, −2.2 on return vs expectation (204 points)). A game-by-game Markov chain turns point odds into match odds; the 90% range covers the uncertainty in the two strengths, not the nudges. Charted matches lean toward big events, so treat this as a scouting estimate, not a betting line.

Head to head, per 100 shots

CareerHarrietRebecca
Direction choice−0.06 ±0.10
better than 42%
+0.13 ±0.10
better than 78%
Shot selection−0.21 ±0.13
better than 27%
+0.36 ±0.16
better than 85%
Execution−0.09 ±0.63
better than 57%
+0.19 ±0.92
better than 69%
Points left on the table2.60 ±0.16
lower than 52%
2.21 ±0.15
lower than 93%

Each player's career against an average tour player in the same position, adjusted for opponent strength, with a 90% margin (shots clustered by match). Points left on the table is the gap to the best-value direction for the same stroke, so lower is better. Percentiles are within each player's own tour. A side is highlighted only when the gap is larger than the margin on the difference.

Serve plan

The share of points the server wins when a first serve lands in that direction (hover a rate for its 90% interval; ± is the 90% margin). "Matchup" combines the server's rate with how this returner handles that serve. "Optimal" is the mix that wins most against this returner once they start reading a habit, at the response measured across the tour, and only within the range servers' habits actually vary. The gain over the current mix is how exploitable that mix is.

Harriet Dart serving

Deuce court

1st serveNowHarriet winsv RebeccaMatchupOptimal
Wide41%66%69%69.1%±10.156% ▲
Body19%56%57%56.6%±12.53% ▼
T40%64%71%67.5%±10.441%

Optimal v Rebecca Sramkova: +0.6±1.2 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving wide every time would read +3.0 per 100 first serves in before the returner adjusts.

Ad court

1st serveNowHarriet winsv RebeccaMatchupOptimal
Wide38%63%66%63.2%±11.253% ▲
Body22%54%57%55.1%±12.711% ▼
T41%55%58%48.1%±11.636% ▼

Optimal v Rebecca Sramkova: +0.3±1.1 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving wide every time would read +7.9 per 100 first serves in before the returner adjusts.

Rebecca Sramkova serving

Deuce court

1st serveNowRebecca winsv HarrietMatchupOptimal
Wide40%65%67%65.4%±9.640%
Body21%56%56%54.3%±12.66% ▼
T39%67%72%71.1%±10.354% ▲

Optimal v Harriet Dart: +1.0±1.2 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving T every time would read +5.8 per 100 first serves in before the returner adjusts.

Ad court

1st serveNowRebecca winsv HarrietMatchupOptimal
Wide33%61%62%58.0%±11.533%
Body15%49%62%54.8%±13.50% ▼
T51%69%60%64.9%±10.067% ▲

Optimal v Harriet Dart: +0.6±1.2 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving T every time would read +3.8 per 100 first serves in before the returner adjusts.

Return plan

Value of each return, in points per 100 returns against an average return of the same serve (direction, court, surface): the tour's result with that return, the returner's own edge with it, and what this server gives up when it comes back to that side. Returns with no charted direction are left out, so values compare with each other rather than with zero. Depth isn't a choice here: missed returns have no depth. Serve quality isn't charted, so a block through the middle partly reflects the serve that forced it.

Harriet Dart returning

1st serve to the forehand

ReturnNowTourOwnv RebeccaValue
FH slice through the middle37%−6.7+1.1−2.3−7.9±2.5
FH through the middle31%+4.2+2.2+2.2+8.5±3.1
FH down the line11%+1.5+1.9−0.7+2.7±4.4
FH crosscourt10%+5.3+1.4+1.0+7.7±4.1
FH slice down the line8%−10.5+1.3−1.1−10.4±2.5

Lean FH through the middle: +8.8±2.4 per 100 returns v the current mix (166 returns charted)

1st serve to the backhand

ReturnNowTourOwnv RebeccaValue
BH through the middle40%+6.0+0.1+1.0+7.2±2.9
BH crosscourt25%+7.7+1.3+3.2+12.2±3.6
BH down the line21%+2.2+0.4−0.9+1.7±4.4
BH slice through the middle10%−6.2+2.4+0.4−3.4±1.8
BH slice down the line4%−12.5+0.1±0.0−12.3±1.5

Lean BH crosscourt: +6.8±3.1 per 100 returns v the current mix (112 returns charted)

2nd serve to the backhand

ReturnNowTourOwnv RebeccaValue
BH through the middle42%−2.6+0.5+1.1−1.0±2.7
BH crosscourt39%+1.5+0.8+1.7+4.0±3.6
BH down the line19%−0.5−1.2−1.7−3.5±4.8

Lean BH crosscourt: +3.5±2.6 per 100 returns v the current mix (74 returns charted)

Rebecca Sramkova returning

1st serve to the forehand

ReturnNowTourOwnv HarrietValue
FH through the middle44%+4.2+0.2+1.1+5.4±3.1
FH down the line31%+1.5+3.0+1.5+6.1±4.7
FH crosscourt22%+5.3+1.0−0.8+5.5±4.1
FH slice through the middle3%−6.7−0.6−0.8−8.1±1.8

Lean FH down the line: +0.9±3.6 per 100 returns v the current mix (144 returns charted, inside the 90% margin)

1st serve to the backhand

ReturnNowTourOwnv HarrietValue
BH through the middle55%+6.0−0.3+1.4+7.1±2.8
BH crosscourt24%+7.7−3.0+2.9+7.7±3.6
BH down the line16%+2.2−0.7+3.2+4.6±4.5
BH slice through the middle5%−6.2+0.6−1.1−6.7±1.8

Lean BH crosscourt: +1.5±3.3 per 100 returns v the current mix (159 returns charted, inside the 90% margin)

2nd serve to the forehand

ReturnNowTourOwnv HarrietValue
FH down the line43%−0.6−0.5+4.2+3.1±5.0
FH crosscourt33%+0.5−0.7+3.5+3.3±4.1
FH through the middle24%−3.2−2.2+1.1−4.3±2.7

Lean FH down the line: +1.7±3.2 per 100 returns v the current mix (42 returns charted, inside the 90% margin)

2nd serve to the backhand

ReturnNowTourOwnv HarrietValue
BH through the middle36%−2.6−0.3+0.5−2.4±2.8
BH down the line34%−0.5−0.2+1.4+0.6±5.1
BH crosscourt30%+1.5−1.5−1.2−1.3±3.6

Lean BH down the line: +1.7±3.7 per 100 returns v the current mix (92 returns charted, inside the 90% margin)

Rally plan

Edge, in points per 100 shots: the hitter's skill with the shot (own) plus how much the receiver usually gives up against it (theirs), both measured against the tour average on grass. Each player's grass record is shrunk toward their all-surface one, so a thin sample on it moves the numbers only a little.

Harriet Dart

Favour

ShotEdgeOwnTheirs
FH to their forehand · return +1+9.4±4.8+5.0+4.4
FH to the middle · return+6.3±3.6+3.6+2.7
FH to their forehand · rally+4.6±4.2+2.6+2.0
FH to their backhand · rally+4.2±3.6+1.6+2.6
BH to their backhand · return+2.9±3.4+0.4+2.6
FH to their forehand · serve +1+2.1±4.2+1.8+0.3

Avoid

ShotEdgeOwnTheirs
BH to their forehand · rally−3.7±4.7−1.8−1.9
FH to the middle · rally−2.0±2.5−1.4−0.6
FH to their backhand · serve +1−1.5±4.3−0.8−0.6
BH to the middle · rally−0.6±2.4−1.1+0.5
BH to the middle · serve +1−0.3±2.7−1.1+0.7

Rebecca Sramkova

Favour

ShotEdgeOwnTheirs
FH to their backhand · return+5.4±4.4+1.6+3.9
BH to their backhand · serve +1+5.2±3.8+1.4+3.8
FH to their backhand · rally+3.7±4.6+0.5+3.2
BH to the middle · return+3.4±3.2+1.1+2.3
FH to their forehand · return+2.2±4.5+0.5+1.7
FH to their backhand · serve +1+2.0±4.2−1.1+3.1

Avoid

ShotEdgeOwnTheirs
BH to their backhand · return−2.5±4.4−1.0−1.5
FH to their forehand · rally−2.4±4.1+1.7−4.1
FH to their forehand · return +1−1.1±4.0+1.6−2.7
BH to the middle · rally−0.2±2.4−1.2+1.0
FH to the middle · return+0.7±2.9−0.5+1.2

Against Rebecca Sramkova-like opponents

Harriet Dart vMatchesServe pts wonReturn pts won
All charted opponents–49.8%43.1%
Players most similar to Rebecca Sramkova2 40.8%38.6%

Similar by tactical fingerprint: Anastasia Potapova, Karolina Pliskova, Ekaterina Alexandrova, Shuai Zhang, Clara Tauson, Viktoria Hruncakova, Veronika Kudermetova, Tsvetana Pironkova, Maria Sharapova. When two players have rarely met, their records against these lookalikes fill the gap.