RallyIQ

Game plan

Belinda Bencic v Dayana Yastremska

Every number combines what Belinda Bencic does well with what Dayana Yastremska allows, each measured against the tour average and shrunk toward it when the sample is thin. Flip perspective

Forecast

Belinda Bencic wins, best of 3 75%90%: 39%–95% · best of 5: 81%
Serve points won 58.4% / 53.2% Belinda / Dayana · tour 55.0%
Strengths only, no similarity priors 74%serve 59.0% / 54.2%

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 At least one of them is no longer active or has too little charted in the last three seasons, so both are compared on their careers.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 Belinda Bencic's record against Dayana Yastremska's tactical lookalikes and in their charted head-to-heads (lookalikes: −2.3 on serve, +3.9 on return vs expectation (753 points); head-to-head: −1.6 on serve, +3.6 on return vs expectation (132 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

CareerBelindaDayana
Direction choice+0.11 ±0.04
better than 74%
−0.06 ±0.08
better than 43%
Shot selection+0.12 ±0.07
better than 58%
+0.11 ±0.22
better than 56%
Execution+0.91 ±0.34
better than 89%
−1.81 ±0.55
better than 6%
Points left on the table2.41 ±0.06
lower than 75%
2.66 ±0.15
lower than 40%

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: Belinda Bencic +0.49, Dayana Yastremska −1.86. 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.

Belinda Bencic serving

Deuce court

1st serveNowBelinda winsv DayanaMatchupOptimal
Wide50%66%65%65.2%±5.050%
Body18%65%56%63.9%±6.53% ▼
T32%71%68%71.1%±5.347% ▲

Optimal v Dayana Yastremska: +0.3±0.9 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving T every time would read +4.3 per 100 first serves in before the returner adjusts.

Ad court

1st serveNowBelinda winsv DayanaMatchupOptimal
Wide42%70%68%72.7%±5.041% ▼
Body14%63%56%63.6%±7.30% ▼
T44%69%66%70.7%±5.059% ▲

Optimal v Dayana Yastremska: +0.5±0.9 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving wide every time would read +2.2 per 100 first serves in before the returner adjusts.

Dayana Yastremska serving

Deuce court

1st serveNowDayana winsv BelindaMatchupOptimal
Wide46%63%67%64.4%±5.046%
Body16%62%55%60.5%±7.21% ▼
T38%69%72%73.2%±5.253% ▲

Optimal v Belinda Bencic: +0.3±0.9 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving T every time would read +6.1 per 100 first serves in before the returner adjusts.

Ad court

1st serveNowDayana winsv BelindaMatchupOptimal
Wide42%68%69%71.4%±5.257% ▲
Body17%56%53%53.5%±7.92% ▼
T41%61%67%63.6%±5.641%

Optimal v Belinda Bencic: +1.1±0.9 per 100 first serves (faults included) over the current mix. Serving wide every time would read +6.3 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.

Belinda Bencic returning

1st serve to the forehand

ReturnNowTourOwnv DayanaValue
FH through the middle32%+4.2±0.0+0.5+4.7±2.2
FH slice through the middle26%−6.7−0.4+1.3−5.9±2.2
FH crosscourt18%+5.3+0.9−4.6+1.6±3.6
FH down the line13%+1.5+2.7+0.9+5.1±4.4
FH slice crosscourt9%−6.6−0.2+1.0−5.8±2.7

Lean FH down the line: +5.0±4.0 per 100 returns v the current mix (1174 returns charted)

1st serve to the backhand

ReturnNowTourOwnv DayanaValue
BH through the middle47%+6.0+0.5+0.4+6.8±2.0
BH crosscourt34%+7.7−2.0+0.3+6.0±2.9
BH down the line9%+2.2+1.2−3.9−0.5±4.6
BH slice through the middle5%−6.2±0.0−0.9−7.2±2.6
BH slice crosscourt4%−4.2−1.8−1.8−7.8±2.9

Lean BH through the middle: +2.5±1.5 per 100 returns v the current mix (857 returns charted)

2nd serve to the forehand

ReturnNowTourOwnv DayanaValue
FH through the middle44%−3.2+0.6+1.4−1.2±2.6
FH crosscourt25%+0.5−2.7−3.7−5.8±4.3
FH down the line23%−0.6+3.2−3.0−0.4±5.1
FH slice through the middle5%−15.2+0.2+2.3−12.6±2.3
FH slice crosscourt3%−14.9+0.3−1.0−15.6±2.0

Lean FH down the line: +2.7±4.3 per 100 returns v the current mix (383 returns charted, inside the 90% margin)

2nd serve to the backhand

ReturnNowTourOwnv DayanaValue
BH crosscourt44%+1.5+2.8−2.1+2.1±3.0
BH through the middle41%−2.6−0.3−1.0−3.9±2.2
BH down the line14%−0.5+5.1−4.0+0.6±5.2
FH through the middle1%−2.7+0.3+1.4−0.9±2.0

Lean BH crosscourt: +2.7±2.0 per 100 returns v the current mix (525 returns charted)

Dayana Yastremska returning

1st serve to the forehand

ReturnNowTourOwnv BelindaValue
FH through the middle44%+4.2−2.2+1.2+3.2±2.0
FH down the line37%+1.5−7.3−4.7−10.4±3.7
FH crosscourt17%+5.3−1.6+1.7+5.3±3.6
FH slice through the middle1%−6.7−0.7−0.9−8.4±2.0

Lean FH crosscourt: +7.0±3.4 per 100 returns v the current mix (475 returns charted)

1st serve to the backhand

ReturnNowTourOwnv BelindaValue
BH through the middle48%+6.0−0.6−0.8+4.7±2.0
BH down the line27%+2.2−1.4−2.4−1.7±4.0
BH crosscourt15%+7.7−0.9−2.5+4.3±3.2
BH slice through the middle4%−6.2−2.2−0.5−8.9±2.3
BH slice crosscourt3%−4.2−3.1−2.8−10.1±2.8

Lean BH through the middle: +3.3±1.6 per 100 returns v the current mix (446 returns charted)

2nd serve to the forehand

ReturnNowTourOwnv BelindaValue
FH through the middle35%−3.2−1.6+0.9−3.9±2.6
FH down the line34%−0.6+2.6−2.8−0.7±5.0
FH crosscourt26%+0.5−2.3+4.1+2.4±3.8
BH through the middle4%−1.0−0.2−0.6−1.8±1.6

Lean FH crosscourt: +3.4±3.4 per 100 returns v the current mix (137 returns charted)

2nd serve to the backhand

ReturnNowTourOwnv BelindaValue
BH through the middle49%−2.6−2.3−0.6−5.5±2.2
BH crosscourt27%+1.5−0.3+0.3+1.6±3.2
BH down the line24%−0.5−3.3+1.9−1.9±4.8

Lean BH crosscourt: +4.3±2.8 per 100 returns v the current mix (246 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.

Belinda Bencic

Favour

ShotEdgeOwnTheirs
BH to their forehand · rally+7.8±4.8+6.5+1.3
BH to their forehand · serve +1+5.5±5.7+4.4+1.1
BH to their forehand · return+5.5±5.5+9.1−3.6
BH to their backhand · serve +1+3.3±4.1+4.7−1.4
BH to the middle · return +1+2.9±3.0+2.1+0.7
FH slice to the middle · rally+2.8±3.2+1.5+1.3

Avoid

ShotEdgeOwnTheirs
FH to their forehand · return−5.3±4.4−0.5−4.8
FH to their forehand · serve +1−3.0±4.1−2.5−0.5
FH to their forehand · return +1−2.6±4.0−0.6−2.0
BH to their forehand · return +1−1.9±5.1−1.4−0.5
FH to the middle · return−1.1±3.0−2.9+1.7

Dayana Yastremska

Favour

ShotEdgeOwnTheirs
BH to their backhand · serve +1+5.1±4.1+1.7+3.4
BH to their forehand · serve +1+2.8±5.5−1.2+4.0
FH to their forehand · serve +1+1.5±4.8−0.3+1.8
FH to their forehand · return+1.5±5.2−0.6+2.1
FH to the middle · serve +1+1.1±3.2−0.3+1.4
BH to their backhand · return +1+1.1±4.2+0.8+0.3

Avoid

ShotEdgeOwnTheirs
FH to their backhand · return−6.6±4.6−3.9−2.7
BH to their forehand · return +1−5.9±5.8−3.7−2.3
FH to their backhand · return +1−5.6±5.0−6.2+0.7
FH to their forehand · return +1−5.1±4.7−4.7−0.4
FH to the middle · return +1−4.4±3.2−3.0−1.5

Against Dayana Yastremska-like opponents

Belinda Bencic vMatchesServe pts wonReturn pts won
All charted opponents–59.6%43.7%
Players most similar to Dayana Yastremska6 57.6%45.9%
Dayana Yastremska (charted head-to-head)1 58.8%48.4%

Similar by tactical fingerprint: Naomi Osaka, Madison Keys, Amanda Anisimova, Ekaterina Alexandrova, Rebecca Sramkova, Sorana Cirstea, Qinwen Zheng, Veronika Kudermetova, Danielle Collins, Daniela Hantuchova. When two players have rarely met, their records against these lookalikes fill the gap.

Charted head-to-head