Game plan
Danielle Collins v Ekaterina Alexandrova
Every number combines what Danielle Collins does well with what Ekaterina Alexandrova allows, each measured against the tour average and shrunk toward it when the sample is thin. Flip perspective
Forecast
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 Danielle Collins's record against Ekaterina Alexandrova's tactical lookalikes and in their charted head-to-heads (lookalikes: −0.3 on serve, +0.1 on return vs expectation (989 points); head-to-head: +19.1 on serve, +5.7 on return vs expectation (99 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
| Career | Danielle | Ekaterina |
|---|---|---|
| Direction choice | +0.30 ±0.07 better than 95% | +0.16 ±0.04 better than 81% |
| Shot selection | +0.11 ±0.08 better than 57% | +0.22 ±0.06 better than 70% |
| Execution | −0.53 ±0.52 better than 32% | −0.41 ±0.36 better than 38% |
| Points left on the table | 2.16 ±0.12 lower than 96% | 2.21 ±0.06 lower than 94% |
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: Danielle Collins −0.80, Ekaterina Alexandrova −1.32. 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.
Danielle Collins serving
Deuce court
| 1st serve | Now | Danielle wins | v Ekaterina | Matchup | Optimal |
|---|---|---|---|---|---|
| Wide | 49% | 66% | 67% | 66.9%±4.7 | 64% ▲ |
| Body | 12% | 62% | 59% | 63.0%±7.5 | 0% ▼ |
| T | 39% | 71% | 68% | 70.8%±5.3 | 36% ▼ |
Optimal v Ekaterina Alexandrova: +0.2±0.8 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 serve | Now | Danielle wins | v Ekaterina | Matchup | Optimal |
|---|---|---|---|---|---|
| Wide | 49% | 72% | 64% | 70.4%±4.9 | 64% ▲ |
| Body | 17% | 57% | 56% | 57.4%±7.4 | 1% ▼ |
| T | 35% | 66% | 66% | 68.4%±5.5 | 35% |
Optimal v Ekaterina Alexandrova: +1.0±0.9 per 100 first serves (faults included) over the current mix. Serving wide every time would read +2.9 per 100 first serves in before the returner adjusts.
Ekaterina Alexandrova serving
Deuce court
| 1st serve | Now | Ekaterina wins | v Danielle | Matchup | Optimal |
|---|---|---|---|---|---|
| Wide | 44% | 70% | 66% | 69.7%±4.7 | 44% |
| Body | 21% | 59% | 56% | 58.0%±6.0 | 6% ▼ |
| T | 35% | 75% | 66% | 73.4%±5.0 | 50% ▲ |
Optimal v Danielle Collins: +0.9±0.8 per 100 first serves (faults included) over the current mix. Serving T every time would read +4.8 per 100 first serves in before the returner adjusts.
Ad court
| 1st serve | Now | Ekaterina wins | v Danielle | Matchup | Optimal |
|---|---|---|---|---|---|
| Wide | 46% | 73% | 63% | 70.8%±5.0 | 61% ▲ |
| Body | 15% | 59% | 59% | 61.9%±6.9 | 0% ▼ |
| T | 39% | 63% | 62% | 61.3%±5.6 | 39% |
Optimal v Danielle Collins: +0.8±0.9 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving wide every time would read +5.1 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
| Return | Now | Tour | Own | v Ekaterina | Value |
|---|---|---|---|---|---|
| FH through the middle | 42% | +4.2 | −1.6 | +0.8 | +3.3±2.1 |
| FH crosscourt | 29% | +5.3 | −1.4 | +1.1 | +5.0±3.7 |
| FH down the line | 15% | +1.5 | +2.0 | −2.4 | +1.2±4.2 |
| FH slice through the middle | 6% | −6.7 | −1.7 | +1.7 | −6.7±2.4 |
| FH slice crosscourt | 5% | −6.6 | −2.1 | +0.4 | −8.4±2.8 |
Lean FH crosscourt: +3.2±2.8 per 100 returns v the current mix (607 returns charted)
1st serve to the backhand
| Return | Now | Tour | Own | v Ekaterina | Value |
|---|---|---|---|---|---|
| BH crosscourt | 44% | +7.7 | −0.4 | −1.4 | +5.9±2.7 |
| BH through the middle | 37% | +6.0 | +0.2 | −0.1 | +6.1±2.1 |
| BH down the line | 11% | +2.2 | −2.3 | −1.1 | −1.2±4.4 |
| BH slice through the middle | 3% | −6.2 | −0.1 | −0.9 | −7.3±2.3 |
| BH slice crosscourt | 3% | −4.2 | −2.2 | −1.8 | −8.2±2.8 |
Lean BH through the middle: +2.1±1.8 per 100 returns v the current mix (494 returns charted)
2nd serve to the forehand
| Return | Now | Tour | Own | v Ekaterina | Value |
|---|---|---|---|---|---|
| FH crosscourt | 51% | +0.5 | +2.4 | +1.7 | +4.6±4.2 |
| FH through the middle | 29% | −3.2 | −2.2 | −1.3 | −6.6±2.7 |
| FH down the line | 19% | −0.6 | −0.5 | −3.9 | −5.0±4.8 |
Lean FH crosscourt: +5.2±2.4 per 100 returns v the current mix (160 returns charted)
2nd serve to the backhand
| Return | Now | Tour | Own | v Ekaterina | Value |
|---|---|---|---|---|---|
| BH crosscourt | 52% | +1.5 | +0.2 | +1.7 | +3.4±2.9 |
| BH through the middle | 30% | −2.6 | −3.1 | −1.5 | −7.3±2.2 |
| BH down the line | 11% | −0.5 | −4.9 | −2.0 | −7.5±4.9 |
| FH inside-in | 4% | +0.7 | −1.7 | +1.7 | +0.7±3.9 |
| FH through the middle | 3% | −2.7 | +0.3 | −1.3 | −3.6±1.9 |
Lean BH crosscourt: +4.7±1.6 per 100 returns v the current mix (270 returns charted)
Ekaterina Alexandrova returning
1st serve to the forehand
| Return | Now | Tour | Own | v Danielle | Value |
|---|---|---|---|---|---|
| FH through the middle | 43% | +4.2 | −3.0 | −1.7 | −0.6±2.1 |
| FH crosscourt | 37% | +5.3 | −1.1 | +0.5 | +4.7±3.5 |
| FH down the line | 14% | +1.5 | +1.5 | −3.7 | −0.7±4.2 |
| FH slice crosscourt | 3% | −6.6 | −5.3 | +1.3 | −10.6±2.7 |
| FH slice through the middle | 3% | −6.7 | −0.8 | −1.6 | −9.1±2.5 |
Lean FH crosscourt: +3.9±2.5 per 100 returns v the current mix (854 returns charted)
1st serve to the backhand
| Return | Now | Tour | Own | v Danielle | Value |
|---|---|---|---|---|---|
| BH through the middle | 53% | +6.0 | −1.4 | +1.8 | +6.4±1.9 |
| BH crosscourt | 23% | +7.7 | −2.4 | +0.4 | +5.8±2.9 |
| BH down the line | 16% | +2.2 | −1.1 | −2.3 | −1.2±4.2 |
| BH slice through the middle | 5% | −6.2 | −1.0 | −2.0 | −9.2±2.6 |
| BH slice crosscourt | 3% | −4.2 | −4.6 | −1.5 | −10.3±2.9 |
Lean BH through the middle: +2.7±1.3 per 100 returns v the current mix (1000 returns charted)
2nd serve to the forehand
| Return | Now | Tour | Own | v Danielle | Value |
|---|---|---|---|---|---|
| FH crosscourt | 42% | +0.5 | −2.3 | −4.3 | −6.1±4.1 |
| FH through the middle | 35% | −3.2 | +0.7 | −1.9 | −4.4±2.8 |
| FH down the line | 21% | −0.6 | +0.8 | −1.2 | −1.0±5.1 |
| FH slice crosscourt | 2% | −14.9 | −1.1 | +2.4 | −13.5±1.9 |
Lean FH down the line: +3.6±4.5 per 100 returns v the current mix (243 returns charted, inside the 90% margin)
2nd serve to the backhand
| Return | Now | Tour | Own | v Danielle | Value |
|---|---|---|---|---|---|
| BH crosscourt | 43% | +1.5 | +0.2 | −0.9 | +0.8±2.8 |
| BH through the middle | 38% | −2.6 | −1.3 | −0.5 | −4.4±2.1 |
| BH down the line | 19% | −0.5 | −1.2 | +0.1 | −1.6±4.9 |
Lean BH crosscourt: +2.4±2.0 per 100 returns v the current mix (557 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.
Danielle Collins
Favour
| Shot | Edge | Own | Theirs |
|---|---|---|---|
| FH to the middle · return +1 | +2.2±2.3 | +0.1 | +2.1 |
| BH to their backhand · return +1 | +1.6±2.6 | +2.5 | −1.0 |
| BH to their forehand · serve +1 | +1.5±3.7 | +2.8 | −1.2 |
| FH to their forehand · return | +1.3±3.1 | −0.3 | +1.6 |
| FH to their forehand · serve +1 | +1.3±2.6 | +0.8 | +0.4 |
| BH to their forehand · return +1 | +1.1±4.1 | +0.6 | +0.5 |
Avoid
| Shot | Edge | Own | Theirs |
|---|---|---|---|
| FH to their backhand · return | −6.3±3.3 | −2.7 | −3.6 |
| BH to the middle · return | −4.5±1.5 | −2.9 | −1.7 |
| BH to their forehand · return | −3.9±3.5 | −2.2 | −1.7 |
| FH to their backhand · return +1 | −3.4±3.6 | −2.3 | −1.1 |
| FH to their backhand · rally | −2.7±2.4 | −3.1 | +0.4 |
Ekaterina Alexandrova
Favour
| Shot | Edge | Own | Theirs |
|---|---|---|---|
| FH to their backhand · return +1 | +2.5±3.3 | +1.4 | +1.2 |
| FH to their forehand · serve +1 | +1.2±2.7 | −0.8 | +2.1 |
| FH to their backhand · rally | +1.1±2.3 | −0.2 | +1.3 |
| BH to their backhand · serve +1 | +0.7±2.6 | +1.1 | −0.4 |
| FH to their forehand · return +1 | +0.4±2.8 | −0.3 | +0.7 |
| BH to the middle · serve +1 | −0.1±1.7 | −1.3 | +1.1 |
Avoid
| Shot | Edge | Own | Theirs |
|---|---|---|---|
| BH to their forehand · return +1 | −6.8±3.9 | −0.4 | −6.4 |
| FH to the middle · serve +1 | −6.3±2.2 | −3.6 | −2.7 |
| FH to the middle · return | −4.6±1.7 | −2.2 | −2.4 |
| BH slice to the middle · rally | −3.9±2.3 | −2.3 | −1.6 |
| BH to their forehand · return | −3.8±3.2 | −2.4 | −1.4 |
Against Ekaterina Alexandrova-like opponents
| Danielle Collins v | Matches | Serve pts won | Return pts won |
|---|---|---|---|
| All charted opponents | – | 59.3% | 44.2% |
| Players most similar to Ekaterina Alexandrova | 8 | 55.7% | 40.3% |
| Ekaterina Alexandrova (charted head-to-head) | 1 | 76.6% | 48.1% |
Similar by tactical fingerprint: Naomi Osaka, Anastasia Potapova, Karolina Pliskova, Iga Swiatek, Sorana Cirstea, Dayana Yastremska, Veronika Kudermetova, Anett Kontaveit, Daniela Hantuchova. When two players have rarely met, their records against these lookalikes fill the gap.