RallyIQ

Game plan

Coco Gauff v Olga Danilovic

Every number combines what Coco Gauff does well with what Olga Danilovic allows, each measured against the tour average and shrunk toward it when the sample is thin. Flip perspective

Forecast

Coco Gauff wins, best of 3 98%90%: 91%–100% · best of 5: 100%
Serve points won 63.3% / 47.5% Coco / Olga · tour 55.1%
Strengths only, no similarity priors 97%serve 63.3% / 49.1%

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 Coco Gauff's record against Olga Danilovic's tactical lookalikes and in their charted head-to-heads (lookalikes: −0.7 on serve, +5.7 on return vs expectation (877 points); head-to-head: +4.9 on serve, +6.8 on return vs expectation (114 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

CareerCocoOlga
Direction choice−0.25 ±0.04
better than 11%
−0.03 ±0.07
better than 49%
Shot selection+0.40 ±0.08
better than 89%
+0.44 ±0.13
better than 92%
Execution+0.41 ±0.27
better than 76%
−1.00 ±0.59
better than 18%
Points left on the table2.86 ±0.06
lower than 20%
2.96 ±0.16
lower than 12%

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: Coco Gauff +0.58, Olga Danilovic −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.

Coco Gauff serving

Deuce court

1st serveNowCoco winsv OlgaMatchupOptimal
Wide47%72%66%71.6%±4.362% ▲
Body25%62%65%68.7%±6.510% ▼
T28%74%72%77.6%±5.328%

Optimal v Olga Danilovic: +0.7±0.8 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving T every time would read +5.1 per 100 first serves in before the returner adjusts.

Ad court

1st serveNowCoco winsv OlgaMatchupOptimal
Wide37%69%72%75.7%±4.838%
Body24%63%51%58.6%±7.69% ▼
T38%71%71%77.0%±4.753% ▲

Optimal v Olga Danilovic: +1.2±0.9 per 100 first serves (faults included) over the current mix. Serving T every time would read +5.0 per 100 first serves in before the returner adjusts.

Olga Danilovic serving

Deuce court

1st serveNowOlga winsv CocoMatchupOptimal
Wide26%64%62%60.2%±6.322% ▼
Body29%54%58%54.0%±6.218% ▼
T45%64%69%64.9%±5.460% ▲

Optimal v Coco Gauff: +0.6±0.7 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving T every time would read +4.4 per 100 first serves in before the returner adjusts.

Ad court

1st serveNowOlga winsv CocoMatchupOptimal
Wide58%61%60%55.3%±4.958%
Body18%57%56%56.7%±7.23% ▼
T23%73%60%68.7%±7.339% ▲

Optimal v Coco Gauff: +0.7±0.9 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving T every time would read +10.0 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.

Coco Gauff returning

1st serve to the forehand

ReturnNowTourOwnv OlgaValue
FH through the middle57%+4.2+1.0−2.8+2.3±2.1
FH down the line20%+1.5+0.3−1.6+0.3±3.9
FH crosscourt19%+5.3−2.0+0.5+3.8±3.6
FH slice through the middle2%−6.7+0.3+1.3−5.1±2.6
FH slice crosscourt1%−6.6−1.7+1.1−7.2±2.5

Lean FH crosscourt: +1.9±3.2 per 100 returns v the current mix (2148 returns charted, inside the 90% margin)

1st serve to the backhand

ReturnNowTourOwnv OlgaValue
BH through the middle52%+6.0+1.5+0.2+7.7±1.7
BH crosscourt27%+7.7+1.5+1.4+10.5±2.7
BH down the line12%+2.2−0.8−3.8−2.4±4.1
BH slice through the middle5%−6.2−3.4−0.3−9.9±2.6
BH slice crosscourt2%−4.2−2.2+0.3−6.0±2.9

Lean BH crosscourt: +5.0±2.2 per 100 returns v the current mix (1176 returns charted)

2nd serve to the forehand

ReturnNowTourOwnv OlgaValue
FH through the middle55%−3.2+0.5−1.7−4.4±2.3
FH crosscourt27%+0.5+1.8+1.6+3.9±3.9
FH down the line15%−0.6−5.0−4.9−10.4±5.1
BH through the middle1%−1.0+0.8+0.3+0.1±2.0
BH inside-out1%+2.2−0.5−1.0+0.6±3.6

Lean FH crosscourt: +6.8±3.2 per 100 returns v the current mix (670 returns charted)

2nd serve to the backhand

ReturnNowTourOwnv OlgaValue
BH crosscourt46%+1.5+0.6−2.4−0.3±3.0
BH through the middle44%−2.6+2.1+0.3−0.2±2.2
BH down the line9%−0.5−0.1−1.0−1.6±5.1

Lean BH through the middle: +0.2±1.9 per 100 returns v the current mix (711 returns charted, inside the 90% margin)

Olga Danilovic returning

1st serve to the forehand

ReturnNowTourOwnv CocoValue
FH through the middle46%+4.2+0.6−1.4+3.3±2.2
FH crosscourt23%+5.3+2.3−2.2+5.4±3.7
FH down the line14%+1.5−3.6−1.4−3.4±3.9
FH slice through the middle8%−6.7−1.6−1.1−9.4±2.2
FH slice crosscourt5%−6.6−2.0−1.9−10.5±2.6

Lean FH crosscourt: +4.8±3.1 per 100 returns v the current mix (304 returns charted)

1st serve to the backhand

ReturnNowTourOwnv CocoValue
BH through the middle39%+6.0−1.7−1.5+2.8±2.0
BH crosscourt25%+7.7−1.6−5.3+0.9±3.0
BH down the line16%+2.2−1.3+1.7+2.6±3.8
BH slice through the middle10%−6.2−2.3−2.7−11.2±2.4
BH slice crosscourt7%−4.2−1.4−0.3−5.9±3.0

Lean BH through the middle: +2.9±1.6 per 100 returns v the current mix (485 returns charted)

2nd serve to the forehand

ReturnNowTourOwnv CocoValue
FH crosscourt42%+0.5−0.2−1.8−1.5±4.2
FH through the middle38%−3.2−0.5−1.6−5.2±2.4
FH down the line20%−0.6−2.5−3.4−6.5±3.9

Lean FH crosscourt: +2.4±2.7 per 100 returns v the current mix (74 returns charted, inside the 90% margin)

2nd serve to the backhand

ReturnNowTourOwnv CocoValue
BH through the middle47%−2.6+0.7−0.6−2.5±2.1
BH crosscourt36%+1.5+0.9−5.0−2.7±3.1
BH down the line9%−0.5−6.6−1.1−8.2±4.5
FH inside-in4%+0.7+0.9−1.8−0.2±4.0
FH through the middle3%−2.7+0.7−1.6−3.6±1.8

Lean BH through the middle: +0.5±1.6 per 100 returns v the current mix (294 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 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.

Coco Gauff

Favour

ShotEdgeOwnTheirs
BH to their forehand · serve +1+6.1±5.4+3.3+2.9
BH to their forehand · rally+5.7±4.1+3.3+2.4
BH to their forehand · return +1+5.6±5.5+4.5+1.1
BH to the middle · return+3.5±2.2+1.4+2.1
FH to the middle · rally+3.0±2.4+0.9+2.1
BH to the middle · rally+2.9±2.2+1.2+1.7

Avoid

ShotEdgeOwnTheirs
FH to their forehand · return−9.5±5.2−3.1−6.4
BH to their forehand · return−4.7±4.7−4.1−0.6
BH to their backhand · return−2.7±3.8+0.8−3.5
FH to the middle · return−2.2±2.5−0.2−2.0
FH to their backhand · serve +1−1.8±4.0−2.8+1.0

Olga Danilovic

Favour

ShotEdgeOwnTheirs
FH to their forehand · serve +1+2.7±4.3+1.6+1.1
FH to the middle · serve +1+1.5±3.0+1.5±0.0
FH to their backhand · return +1+1.3±4.4+2.8−1.6
FH to their backhand · return+0.9±4.6+2.3−1.3
BH to their forehand · return +1+0.4±5.8+2.6−2.3
FH to the middle · return+0.2±2.7+0.9−0.7

Avoid

ShotEdgeOwnTheirs
FH to their forehand · return−9.6±5.3−6.2−3.5
BH to their backhand · return−6.4±4.1−6.6+0.2
BH slice to the middle · rally−5.0±3.2−5.4+0.5
BH to their forehand · return−4.4±4.6+1.6−5.9
FH to the middle · return +1−3.6±3.3−2.7−0.9

Against Olga Danilovic-like opponents

Coco Gauff vMatchesServe pts wonReturn pts won
All charted opponents–60.3%45.5%
Players most similar to Olga Danilovic7 59.4%50.7%
Olga Danilovic (charted head-to-head)1 67.4%52.9%

Similar by tactical fingerprint: Alexandra Eala, Diana Shnaider, Marta Kostyuk, Leylah Fernandez, Sara Bejlek, Kaja Juvan, Olivia Gadecki, Xiyu Wang, Bernarda Pera, Misaki Doi. When two players have rarely met, their records against these lookalikes fill the gap.

Charted head-to-head