RallyIQ

Game plan

Danielle Collins v Elena Gabriela Ruse

Every number combines what Danielle Collins does well with what Elena Gabriela Ruse allows, each measured against the tour average and shrunk toward it when the sample is thin. Flip perspective

Forecast

Danielle Collins wins, best of 3 84%90%: 57%–96% · best of 5: 89%
Serve points won 59.3% / 51.8% Danielle / Elena · tour 56.3%
Strengths only, no similarity priors 81%serve 58.6% / 52.1%

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. At least one of them is no longer active or has too little charted in the last three seasons, so both are compared on their careers.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 Danielle Collins's record against Elena Gabriela Ruse's tactical lookalikes and in their charted head-to-heads (lookalikes: +4.4 on serve, +2.3 on return vs expectation (450 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

CareerDanielleElena
Direction choice+0.30 ±0.07
better than 95%
+0.07 ±0.12
better than 68%
Shot selection+0.11 ±0.08
better than 57%
+0.17 ±0.22
better than 61%
Execution−0.53 ±0.52
better than 32%
−1.82 ±0.59
better than 6%
Points left on the table2.16 ±0.12
lower than 96%
2.36 ±0.17
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.

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.

Danielle Collins serving

Deuce court

1st serveNowDanielle winsv ElenaMatchupOptimal
Wide49%66%68%67.3%±7.246% ▼
Body12%62%55%59.8%±10.80% ▼
T39%71%72%75.0%±7.554% ▲

Optimal v Elena Gabriela Ruse: +0.5±1.0 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving T every time would read +5.6 per 100 first serves in before the returner adjusts.

Ad court

1st serveNowDanielle winsv ElenaMatchupOptimal
Wide49%72%70%75.2%±7.864% ▲
Body17%57%53%54.2%±10.01% ▼
T35%66%63%64.9%±8.335%

Optimal v Elena Gabriela Ruse: +1.0±1.1 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving wide every time would read +7.1 per 100 first serves in before the returner adjusts.

Elena Gabriela Ruse serving

Deuce court

1st serveNowElena winsv DanielleMatchupOptimal
Wide47%64%66%63.8%±7.843% ▼
Body16%60%56%58.3%±10.74% ▼
T37%69%66%67.1%±8.853% ▲

Optimal v Danielle Collins: +0.3±1.0 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving T every time would read +2.9 per 100 first serves in before the returner adjusts.

Ad court

1st serveNowElena winsv DanielleMatchupOptimal
Wide35%61%63%57.6%±9.240% ▲
Body11%48%59%51.3%±11.80% ▼
T54%65%62%63.0%±8.060% ▲

Optimal v Danielle Collins: +0.2±0.7 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving T every time would read +3.2 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.

Danielle Collins returning

1st serve to the forehand

ReturnNowTourOwnv ElenaValue
FH through the middle42%+4.2−1.6+0.9+3.5±2.7
FH crosscourt29%+5.3−1.4−2.1+1.8±4.0
FH down the line15%+1.5+2.0+1.1+4.7±4.6
FH slice through the middle6%−6.7−1.7+1.3−7.1±2.5
FH slice crosscourt5%−6.6−2.1−0.1−8.9±2.4

Lean FH down the line: +3.2±4.3 per 100 returns v the current mix (607 returns charted, inside the 90% margin)

1st serve to the backhand

ReturnNowTourOwnv ElenaValue
BH crosscourt44%+7.7−0.4+0.1+7.4±3.3
BH through the middle37%+6.0+0.2−1.2+5.0±2.7
BH down the line11%+2.2−2.3−2.2−2.3±4.6
BH slice through the middle3%−6.2−0.1+1.6−4.8±2.1
BH slice crosscourt3%−4.2−2.2+1.1−5.2±2.4

Lean BH crosscourt: +3.1±2.2 per 100 returns v the current mix (494 returns charted)

2nd serve to the forehand

ReturnNowTourOwnv ElenaValue
FH crosscourt51%+0.5+2.4+4.3+7.2±4.0
FH through the middle29%−3.2−2.2+2.4−3.0±3.1
FH down the line19%−0.6−0.5−1.3−2.3±5.0

Lean FH crosscourt: +4.8±2.4 per 100 returns v the current mix (160 returns charted)

2nd serve to the backhand

ReturnNowTourOwnv ElenaValue
BH crosscourt52%+1.5+0.2−0.7+1.0±3.4
BH through the middle30%−2.6−3.1+2.2−3.6±2.7
BH down the line11%−0.5−4.9−1.1−6.6±5.2
FH inside-in4%+0.7−1.7+4.3+3.4±3.7
FH through the middle3%−2.7+0.3+2.4+0.1±2.3

Lean BH crosscourt: +2.2±1.9 per 100 returns v the current mix (270 returns charted)

Elena Gabriela Ruse returning

1st serve to the forehand

ReturnNowTourOwnv DanielleValue
FH through the middle50%+4.2−1.7−1.7+0.8±2.6
FH crosscourt22%+5.3+1.7+0.5+7.5±4.1
FH down the line16%+1.5−3.5−3.7−5.7±4.4
FH slice through the middle10%−6.7−1.4−1.6−9.7±2.4
FH slice crosscourt3%−6.6−1.5+1.3−6.9±2.2

Lean FH crosscourt: +7.6±3.6 per 100 returns v the current mix (187 returns charted)

1st serve to the backhand

ReturnNowTourOwnv DanielleValue
BH through the middle50%+6.0−0.6+1.8+7.2±2.5
BH crosscourt20%+7.7−2.4+0.4+5.8±3.2
BH down the line20%+2.2+0.5−2.3+0.4±4.4
BH slice down the line5%−12.5−0.8−1.0−14.2±2.6
BH slice through the middle5%−6.2−1.0−2.0−9.2±2.1

Lean BH through the middle: +3.5±1.7 per 100 returns v the current mix (121 returns charted)

2nd serve to the forehand

ReturnNowTourOwnv DanielleValue
FH through the middle49%−3.2+1.2−1.9−3.9±2.7
FH crosscourt36%+0.5−0.3−4.3−4.1±4.0
FH down the line15%−0.6±0.0−1.2−1.8±4.3

Lean FH through the middle: −0.3±2.1 per 100 returns v the current mix (53 returns charted, inside the 90% margin)

2nd serve to the backhand

ReturnNowTourOwnv DanielleValue
BH through the middle48%−2.6−1.4−0.5−4.5±2.4
BH crosscourt37%+1.5−2.6−0.9−2.0±3.2
BH down the line16%−0.5+1.3+0.1+0.9±4.6

Lean BH crosscourt: +0.7±2.5 per 100 returns v the current mix (82 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.

Danielle Collins

Favour

ShotEdgeOwnTheirs
BH to their backhand · return +1+4.4±3.2+2.5+1.9
FH to their backhand · serve +1+2.0±3.9−0.5+2.5
BH to their forehand · rally+1.3±4.1+1.2+0.1
BH to the middle · rally+1.0±2.2±0.0+1.0
FH to the middle · serve +1+0.8±2.5+0.3+0.5
FH to the middle · return+0.5±2.4−1.8+2.2

Avoid

ShotEdgeOwnTheirs
BH to their forehand · return−4.7±4.2−2.2−2.5
BH to the middle · return−3.4±2.1−2.9−0.5
BH to their backhand · return−3.2±2.7−2.0−1.2
FH to their backhand · rally−2.8±3.5−3.1+0.3
BH to the middle · serve +1−2.8±2.4−0.4−2.4

Elena Gabriela Ruse

Favour

ShotEdgeOwnTheirs
FH to their forehand · serve +1+2.1±3.8+0.1+2.1
FH to their forehand · return +1+2.0±3.7+1.3+0.7
BH to their forehand · serve +1+1.7±4.5−0.7+2.4
BH to the middle · serve +1+0.4±2.3−0.7+1.1
FH to their forehand · return+0.1±4.0+2.4−2.4
BH to the middle · return−0.5±2.1−0.7+0.2

Avoid

ShotEdgeOwnTheirs
BH to their backhand · return−4.6±3.0−4.1−0.5
BH to the middle · rally−3.9±2.1−3.0−0.9
FH to their backhand · serve +1−3.6±3.8−1.7−1.9
FH to the middle · return−3.6±2.2−1.2−2.4
FH to the middle · rally−3.4±2.3−2.3−1.1

Against Elena Gabriela Ruse-like opponents

Danielle Collins vMatchesServe pts wonReturn pts won
All charted opponents–59.3%44.2%
Players most similar to Elena Gabriela Ruse4 63.4%43.5%

Similar by tactical fingerprint: Naomi Osaka, Anastasia Potapova, Karolina Pliskova, Ekaterina Alexandrova, Serena Williams, Clara Tauson, Viktoria Hruncakova, Veronika Kudermetova, Ana Konjuh. When two players have rarely met, their records against these lookalikes fill the gap.