RallyIQ

Game plan

Jessica Pegula v Daria Kasatkina

Every number combines what Jessica Pegula does well with what Daria Kasatkina allows, each measured against the tour average and shrunk toward it when the sample is thin. Flip perspective

Forecast

Jessica Pegula wins, best of 3 96%90%: 74%–100% · best of 5: 98%
Serve points won 63.0% / 49.9% Jessica / Daria · tour 57.7%
Strengths only, no similarity priors 95%serve 62.2% / 49.9%

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. Both were charted enough in the last three seasons, so those carry the most weight. The result is then nudged by Jessica Pegula's record against Daria Kasatkina's tactical lookalikes and in their charted head-to-heads (lookalikes: +4.7 on serve, −0.2 on return vs expectation (812 points); head-to-head: −2.2 on serve, +0.4 on return vs expectation (380 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

CareerJessicaDaria
Direction choice−0.15 ±0.04
better than 25%
+0.08 ±0.07
better than 70%
Shot selection−0.24 ±0.07
better than 26%
−0.29 ±0.11
better than 22%
Execution+0.29 ±0.30
better than 72%
+1.39 ±0.30
better than 96%
Points left on the table2.72 ±0.06
lower than 31%
2.36 ±0.08
lower than 79%

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.

Structural compatibility

Expected edge per 100 rally shots from style alone: Jessica Pegula +0.91, Daria Kasatkina +0.94. Each player's shot mix weighted by their own skill with each shot and by how much the other gives up against it. This is why some rankings gaps don't hold in a given matchup.

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.

Jessica Pegula serving

Deuce court

1st serveNowJessica winsv DariaMatchupOptimal
Wide31%67%63%64.5%±4.231%
Body29%62%52%56.7%±5.114% ▼
T40%74%67%72.5%±4.055% ▲

Optimal v Daria Kasatkina: +0.8±0.7 per 100 first serves (faults included) over the current mix. Serving T every time would read +7.0 per 100 first serves in before the returner adjusts.

Ad court

1st serveNowJessica winsv DariaMatchupOptimal
Wide29%66%60%60.8%±4.739% ▲
Body22%61%56%60.8%±5.618% ▼
T49%63%63%61.4%±4.243% ▼

Optimal v Daria Kasatkina: ±0.0±0.4 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving T every time would read +0.3 per 100 first serves in before the returner adjusts.

Daria Kasatkina serving

Deuce court

1st serveNowDaria winsv JessicaMatchupOptimal
Wide43%63%65%61.8%±4.158% ▲
Body25%57%55%53.9%±5.110% ▼
T32%65%70%67.5%±4.532%

Optimal v Jessica Pegula: +0.3±0.7 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 serveNowDaria winsv JessicaMatchupOptimal
Wide40%57%64%55.5%±4.240%
Body22%52%54%50.2%±5.77% ▼
T38%61%62%58.9%±4.553% ▲

Optimal v Jessica Pegula: +0.4±0.8 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving T every time would read +3.3 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.

Jessica Pegula returning

1st serve to the forehand

ReturnNowTourOwnv DariaValue
FH through the middle49%+4.2−1.8+1.8+4.1±1.6
FH crosscourt19%+5.3+1.4+1.9+8.6±3.0
FH slice through the middle13%−6.7+0.3−0.2−6.6±2.4
FH down the line11%+1.5+0.4+2.3+4.2±3.8
FH slice crosscourt4%−6.6−0.2−1.1−7.9±2.7

Lean FH crosscourt: +6.0±2.6 per 100 returns v the current mix (1257 returns charted)

1st serve to the backhand

ReturnNowTourOwnv DariaValue
BH through the middle42%+6.0−3.0+0.3+3.3±1.6
BH crosscourt24%+7.7+0.5+3.5+11.8±2.3
BH slice through the middle12%−6.2−0.2+2.1−4.3±2.4
BH down the line12%+2.2−1.4+0.8+1.5±3.9
BH slice crosscourt6%−4.2−0.9−1.1−6.2±3.0

Lean BH crosscourt: +8.7±2.0 per 100 returns v the current mix (1269 returns charted)

2nd serve to the forehand

ReturnNowTourOwnv DariaValue
FH through the middle46%−3.2−1.4+1.8−2.8±2.6
FH crosscourt27%+0.5+0.2+0.8+1.6±3.9
FH down the line23%−0.6+2.7+6.7+8.8±4.9
FH slice through the middle2%−15.2−1.2±0.0−16.4±1.3
FH slice down the line2%−14.1−1.7±0.0−15.8±1.7

Lean FH down the line: +8.3±4.1 per 100 returns v the current mix (359 returns charted)

2nd serve to the backhand

ReturnNowTourOwnv DariaValue
BH through the middle48%−2.6−1.0+0.8−2.8±2.0
BH crosscourt34%+1.5−6.1+1.5−3.1±2.8
BH down the line17%−0.5−0.4−1.5−2.4±4.7
BH slice through the middle2%−11.7−0.9−0.6−13.2±1.6

Lean BH down the line: +0.5±4.2 per 100 returns v the current mix (637 returns charted, inside the 90% margin)

Daria Kasatkina returning

1st serve to the forehand

ReturnNowTourOwnv JessicaValue
FH through the middle39%+4.2+3.2+0.4+7.7±1.7
FH crosscourt21%+5.3+2.1±0.0+7.4±3.1
FH slice through the middle17%−6.7+0.9+0.8−4.9±2.1
FH down the line12%+1.5+6.0−1.3+6.2±3.9
FH slice crosscourt9%−6.6+1.7+0.2−4.7±2.7

Lean FH through the middle: +3.9±1.4 per 100 returns v the current mix (1118 returns charted)

1st serve to the backhand

ReturnNowTourOwnv JessicaValue
BH through the middle49%+6.0+2.8−0.2+8.7±1.5
BH crosscourt28%+7.7+2.8−1.5+9.0±2.5
BH down the line12%+2.2+3.5−3.2+2.5±3.8
BH slice through the middle6%−6.2+1.6−1.1−5.8±2.5
BH slice crosscourt3%−4.2−1.0−2.5−7.6±3.0

Lean BH crosscourt: +2.9±2.0 per 100 returns v the current mix (1078 returns charted)

2nd serve to the forehand

ReturnNowTourOwnv JessicaValue
FH through the middle46%−3.2+3.7−0.7−0.2±2.5
FH crosscourt30%+0.5+0.6+2.1+3.2±3.8
FH down the line21%−0.6+2.6−0.8+1.2±4.8
FH slice through the middle4%−15.2+1.3−0.1−14.1±1.8

Lean FH crosscourt: +2.7±3.1 per 100 returns v the current mix (226 returns charted, inside the 90% margin)

2nd serve to the backhand

ReturnNowTourOwnv JessicaValue
BH through the middle35%−2.6+1.9+0.1−0.6±1.9
BH crosscourt31%+1.5+1.1−0.5+2.1±2.6
BH down the line15%−0.5+0.7−0.8−0.6±4.5
FH inside-out9%+1.4+0.4−0.8+0.9±3.9
FH through the middle7%−2.7+1.3−0.7−2.0±2.3
FH inside-in4%+0.7+3.3+2.1+6.1±3.9

Lean FH inside-in: +5.6±3.9 per 100 returns v the current mix (596 returns charted)

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.

Jessica Pegula

Favour

ShotEdgeOwnTheirs
BH to their forehand · return +1+9.2±5.7+1.7+7.5
BH to their backhand · return +1+9.0±4.4+4.1+5.0
FH to their backhand · return +1+7.8±5.4+2.5+5.3
BH volley to their forehand · rally+7.2±6.2+1.5+5.7
FH to their backhand · return+6.2±5.5−1.5+7.7
BH to their backhand · rally+5.9±4.0+4.3+1.6

Avoid

ShotEdgeOwnTheirs
BH to their backhand · serve +1−5.8±4.4−4.9−0.9
FH to their backhand · serve +1−4.7±5.1−4.1−0.6
BH to their forehand · return−2.3±5.2−0.9−1.4
FH slice to their forehand · rally−1.7±4.4−1.4−0.4
FH volley to their backhand · rally−0.9±6.7−3.6+2.7

Daria Kasatkina

Favour

ShotEdgeOwnTheirs
FH slice to their forehand · return+6.1±4.0+3.7+2.4
FH to their forehand · return+5.8±5.2+5.0+0.7
FH slice to the middle · return+4.7±3.4+2.5+2.2
BH to their forehand · rally+4.6±5.2+2.6+2.0
FH to their backhand · rally+4.1±4.3+3.8+0.3
BH to the middle · return+4.1±3.0+3.9+0.2

Avoid

ShotEdgeOwnTheirs
FH to their backhand · serve +1−4.8±4.9+1.6−6.4
FH slice to the middle · rally−3.7±3.4−1.6−2.1
BH to their backhand · return +1−2.7±4.4+2.6−5.4
BH slice to their forehand · rally−2.1±4.1+0.7−2.8
FH to their backhand · return +1−2.0±5.3+2.6−4.6

Against Daria Kasatkina-like opponents

Jessica Pegula vMatchesServe pts wonReturn pts won
All charted opponents–58.5%43.9%
Players most similar to Daria Kasatkina5 63.4%44.0%
Daria Kasatkina (charted head-to-head)2 54.7%48.6%

Similar by tactical fingerprint: Marie Bouzkova, Emma Navarro, Jaqueline Cristian, Emma Raducanu, Nao Hibino, Linda Fruhvirtova, Caroline Wozniacki, Simona Halep, Svetlana Kuznetsova, Elena Dementieva. When two players have rarely met, their records against these lookalikes fill the gap.

Charted head-to-head