RallyIQ

Game plan

Petra Kvitova v Elena Rybakina

Every number combines what Petra Kvitova does well with what Elena Rybakina allows, each measured against the tour average and shrunk toward it when the sample is thin. Flip perspective

Forecast

Petra Kvitova wins, best of 3 24%90%: 10%–45% · best of 5: 19%
Serve points won 58.1% / 63.6% Petra / Elena · tour 55.0%
Strengths only, no similarity priors 29%serve 58.1% / 62.4%

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 At least one of them is no longer active or has too little charted in the last three seasons, so both are compared on their careers.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 Petra Kvitova's record against Elena Rybakina's tactical lookalikes and in their charted head-to-heads (lookalikes: −5.2 on serve, −5.9 on return vs expectation (588 points); head-to-head: +18.9 on serve, −3.9 on return vs expectation (140 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

CareerPetraElena
Direction choice+0.13 ±0.04
better than 77%
+0.15 ±0.03
better than 80%
Shot selection+0.33 ±0.07
better than 82%
+0.33 ±0.06
better than 81%
Execution−0.96 ±0.32
better than 18%
+0.40 ±0.26
better than 75%
Points left on the table3.00 ±0.06
lower than 11%
2.42 ±0.05
lower than 73%

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: Petra Kvitova −2.13, Elena Rybakina −2.02. 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.

Petra Kvitova serving

Deuce court

1st serveNowPetra winsv ElenaMatchupOptimal
Wide42%72%65%71.5%±3.357% ▲
Body12%57%57%56.4%±5.30% ▼
T46%66%67%64.5%±3.543% ▼

Optimal v Elena Rybakina: +0.6±0.6 per 100 first serves (faults included) over the current mix. Serving wide every time would read +5.1 per 100 first serves in before the returner adjusts.

Ad court

1st serveNowPetra winsv ElenaMatchupOptimal
Wide54%71%68%72.7%±3.069% ▲
Body8%54%58%56.1%±6.40% ▼
T38%73%65%73.2%±3.331% ▼

Optimal v Elena Rybakina: +0.9±0.5 per 100 first serves (faults included) over the current mix. Serving T every time would read +1.7 per 100 first serves in before the returner adjusts.

Elena Rybakina serving

Deuce court

1st serveNowElena winsv PetraMatchupOptimal
Wide39%71%66%70.4%±3.249% ▲
Body11%63%57%62.8%±5.20% ▼
T50%78%68%78.3%±2.851% ▲

Optimal v Petra Kvitova: +0.4±0.5 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving T every time would read +4.7 per 100 first serves in before the returner adjusts.

Ad court

1st serveNowElena winsv PetraMatchupOptimal
Wide55%78%67%79.1%±2.852% ▼
Body9%61%58%62.9%±5.80% ▼
T36%70%64%70.0%±3.448% ▲

Optimal v Petra Kvitova: +0.5±0.5 per 100 first serves (faults included) over the current mix. Serving wide every time would read +4.7 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.

Petra Kvitova returning

1st serve to the forehand

ReturnNowTourOwnv ElenaValue
FH through the middle49%+4.2−1.4−1.3+1.5±1.6
FH crosscourt25%+5.3−0.7−1.6+3.1±3.0
FH down the line19%+1.5−5.1−1.6−5.2±3.3
FH slice through the middle4%−6.7−0.1−0.4−7.2±2.2
FH slice crosscourt1%−6.6−0.6−0.4−7.7±2.6

Lean FH crosscourt: +3.0±2.5 per 100 returns v the current mix (1275 returns charted)

1st serve to the backhand

ReturnNowTourOwnv ElenaValue
BH through the middle47%+6.0−1.9−0.8+3.3±1.4
BH crosscourt26%+7.7−2.2−2.3+3.2±2.5
BH down the line13%+2.2±0.0−2.4−0.2±3.4
BH slice through the middle7%−6.2+0.2−1.5−7.5±2.2
BH slice crosscourt3%−4.2−4.5−3.0−11.7±3.0
FH through the middle1%+5.1+0.2−1.3+4.0±2.0

Lean FH through the middle: +2.8±2.3 per 100 returns v the current mix (1499 returns charted)

2nd serve to the forehand

ReturnNowTourOwnv ElenaValue
FH crosscourt43%+0.5−0.4−0.2−0.1±3.7
FH through the middle37%−3.2−4.5−0.5−8.2±2.3
FH down the line20%−0.6−1.3+0.7−1.2±4.5

Lean FH crosscourt: +3.2±2.4 per 100 returns v the current mix (419 returns charted)

2nd serve to the backhand

ReturnNowTourOwnv ElenaValue
BH through the middle44%−2.6+0.5−0.5−2.5±1.7
BH crosscourt41%+1.5+1.2−1.8+0.9±2.5
BH down the line15%−0.5+1.0−0.3+0.1±4.0
BH slice through the middle1%−11.7−0.7−1.3−13.7±1.9

Lean BH crosscourt: +1.7±1.7 per 100 returns v the current mix (593 returns charted, inside the 90% margin)

Elena Rybakina returning

1st serve to the forehand

ReturnNowTourOwnv PetraValue
FH through the middle46%+4.2−0.8−1.9+1.5±1.4
FH down the line31%+1.5−0.2−5.1−3.8±3.1
FH crosscourt15%+5.3+0.1−0.2+5.2±3.0
FH slice through the middle5%−6.7−3.4−2.0−12.1±2.3
FH slice crosscourt2%−6.6−0.6+0.9−6.3±2.8

Lean FH crosscourt: +5.8±2.8 per 100 returns v the current mix (2246 returns charted)

1st serve to the backhand

ReturnNowTourOwnv PetraValue
BH through the middle44%+6.0±0.0+0.8+6.9±1.4
BH crosscourt22%+7.7+1.7+2.7+12.1±2.3
BH down the line19%+2.2+0.2−0.5+1.9±3.4
BH slice through the middle8%−6.2−1.3−2.8−10.3±2.2
BH slice crosscourt4%−4.2−1.2+0.2−5.2±2.9

Lean BH crosscourt: +7.6±2.0 per 100 returns v the current mix (1613 returns charted)

2nd serve to the forehand

ReturnNowTourOwnv PetraValue
FH through the middle41%−3.2−1.1−1.0−5.2±2.2
FH crosscourt30%+0.5+2.4+1.0+4.0±3.9
FH down the line28%−0.6−0.8−5.1−6.4±4.6
FH slice through the middle2%−15.2−0.7+0.1−15.8±2.1

Lean FH crosscourt: +6.9±3.1 per 100 returns v the current mix (580 returns charted)

2nd serve to the backhand

ReturnNowTourOwnv PetraValue
BH crosscourt43%+1.5+0.4−2.8−0.9±2.4
BH through the middle40%−2.6±0.0−2.3−4.9±1.6
BH down the line16%−0.5+0.8−3.7−3.4±4.4

Lean BH crosscourt: +2.0±1.7 per 100 returns v the current mix (849 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 clay. Each player's clay record is shrunk toward their all-surface one, so a thin sample on it moves the numbers only a little.

Petra Kvitova

Favour

ShotEdgeOwnTheirs
FH volley to their backhand · rally+7.9±7.0+4.3+3.5
FH to their forehand · return +1+1.8±4.2−0.2+2.0
BH to their forehand · serve +1−0.4±5.0+1.0−1.4
BH to their forehand · rally−0.4±4.3−1.6+1.2
BH slice to the middle · return +1−1.0±3.1−1.9+0.9
FH to their backhand · serve +1−1.5±3.7+0.2−1.7

Avoid

ShotEdgeOwnTheirs
BH to their forehand · return +1−7.4±5.5−0.3−7.0
BH to the middle · rally−6.6±2.4−5.4−1.2
BH to their backhand · return−6.0±3.5−4.9−1.1
FH volley to their forehand · rally−5.8±7.8−7.5+1.7
BH to the middle · return−5.7±2.2−2.4−3.3

Elena Rybakina

Favour

ShotEdgeOwnTheirs
BH to their forehand · serve +1+1.6±5.1+0.3+1.3
BH to their forehand · rally+1.0±4.5+1.9−0.9
BH to the middle · return+0.1±2.1+0.7−0.6
BH to the middle · serve +1−0.2±2.6±0.0−0.2
FH to their backhand · rally−0.4±3.5+0.2−0.6
FH slice to the middle · rally−1.5±3.6−0.8−0.7

Avoid

ShotEdgeOwnTheirs
BH slice to their backhand · rally−12.2±3.9−7.1−5.1
BH to their backhand · rally−9.3±3.4−2.5−6.9
BH slice to their forehand · rally−8.2±4.8−6.1−2.1
BH to their backhand · return +1−7.1±3.9+0.4−7.5
FH slice to the middle · return−6.0±3.2−3.9−2.0

Against Elena Rybakina-like opponents

Petra Kvitova vMatchesServe pts wonReturn pts won
All charted opponents–60.7%42.9%
Players most similar to Elena Rybakina4 56.8%34.8%
Elena Rybakina (charted head-to-head)1 77.9%34.7%

Similar by tactical fingerprint: Barbora Krejcikova, Anastasia Pavlyuchenkova, Veronika Kudermetova, Danielle Collins, Caroline Garcia, Rebecca Marino, Anett Kontaveit, Johanna Konta, Coco Vandeweghe. When two players have rarely met, their records against these lookalikes fill the gap.

Charted head-to-head