Game plan
Zhizhen Zhang v Ethan Quinn
Every number combines what Zhizhen Zhang does well with what Ethan Quinn 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 Zhizhen Zhang's record against Ethan Quinn's tactical lookalikes and in their charted head-to-heads (lookalikes: +2.1 on serve, +3.7 on return vs expectation (333 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 | Zhizhen | Ethan |
|---|---|---|
| Direction choice | −0.06 ±0.09 better than 41% | −0.06 ±0.07 better than 41% |
| Shot selection | +0.03 ±0.20 better than 54% | ±0.00 ±0.19 better than 53% |
| Execution | −0.36 ±0.66 better than 51% | −2.26 ±0.66 better than 1% |
| Points left on the table | 2.50 ±0.14 lower than 61% | 2.56 ±0.15 lower than 55% |
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.
Zhizhen Zhang serving
Deuce court
| 1st serve | Now | Zhizhen wins | v Ethan | Matchup | Optimal |
|---|---|---|---|---|---|
| Wide | 43% | 72% | 72% | 71.9%±7.4 | 56% ▲ |
| Body | 7% | 69% | 62% | 68.5%±12.6 | 0% ▼ |
| T | 50% | 76% | 70% | 71.2%±7.5 | 44% ▼ |
Optimal v Ethan Quinn: +0.3±0.8 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving wide every time would read +0.6 per 100 first serves in before the returner adjusts.
Ad court
| 1st serve | Now | Zhizhen wins | v Ethan | Matchup | Optimal |
|---|---|---|---|---|---|
| Wide | 44% | 69% | 77% | 73.4%±8.1 | 38% ▼ |
| Body | 8% | 57% | 54% | 47.9%±14.5 | 0% ▼ |
| T | 49% | 75% | 74% | 76.7%±6.9 | 62% ▲ |
Optimal v Ethan Quinn: +1.2±0.8 per 100 first serves (faults included) over the current mix. Serving T every time would read +3.7 per 100 first serves in before the returner adjusts.
Ethan Quinn serving
Deuce court
| 1st serve | Now | Ethan wins | v Zhizhen | Matchup | Optimal |
|---|---|---|---|---|---|
| Wide | 41% | 70% | 81% | 78.9%±6.1 | 54% ▲ |
| Body | 15% | 62% | 65% | 63.6%±12.6 | 2% ▼ |
| T | 44% | 78% | 77% | 79.9%±6.6 | 44% |
Optimal v Zhizhen Zhang: +1.2±1.0 per 100 first serves (faults included) over the current mix. Serving T every time would read +2.9 per 100 first serves in before the returner adjusts.
Ad court
| 1st serve | Now | Ethan wins | v Zhizhen | Matchup | Optimal |
|---|---|---|---|---|---|
| Wide | 41% | 75% | 78% | 80.1%±6.6 | 37% ▼ |
| Body | 9% | 67% | 67% | 70.9%±13.1 | 0% ▼ |
| T | 50% | 71% | 77% | 76.9%±7.0 | 63% ▲ |
Optimal v Zhizhen Zhang: +0.7±0.8 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving wide every time would read +2.4 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.
Zhizhen Zhang returning
1st serve to the forehand
| Return | Now | Tour | Own | v Ethan | Value |
|---|---|---|---|---|---|
| FH through the middle | 40% | +4.3 | +0.5 | −2.2 | +2.5±2.9 |
| FH crosscourt | 23% | +5.5 | ±0.0 | −2.1 | +3.5±4.3 |
| FH slice through the middle | 14% | −4.2 | −0.2 | −0.6 | −5.0±2.4 |
| FH down the line | 13% | +1.7 | −5.0 | −6.4 | −9.7±4.5 |
| FH slice crosscourt | 6% | −4.3 | −2.7 | +0.4 | −6.6±2.5 |
Lean FH crosscourt: +4.2±3.6 per 100 returns v the current mix (342 returns charted)
1st serve to the backhand
| Return | Now | Tour | Own | v Ethan | Value |
|---|---|---|---|---|---|
| BH through the middle | 37% | +6.4 | +1.7 | −1.7 | +6.4±2.7 |
| BH crosscourt | 27% | +8.8 | +1.6 | −0.1 | +10.3±3.5 |
| BH slice through the middle | 12% | −4.2 | −1.2 | −3.1 | −8.5±2.4 |
| BH slice crosscourt | 11% | +0.5 | +0.9 | −4.0 | −2.5±2.8 |
| BH down the line | 9% | +4.2 | +0.2 | −0.4 | +3.9±4.3 |
Lean BH crosscourt: +6.6±2.8 per 100 returns v the current mix (368 returns charted)
2nd serve to the forehand
| Return | Now | Tour | Own | v Ethan | Value |
|---|---|---|---|---|---|
| FH through the middle | 45% | −3.5 | −2.6 | −0.8 | −6.8±2.9 |
| FH crosscourt | 35% | −0.2 | +0.8 | −0.3 | +0.3±4.2 |
| FH down the line | 20% | −1.8 | −0.8 | −0.4 | −3.0±4.2 |
Lean FH crosscourt: +3.9±3.1 per 100 returns v the current mix (100 returns charted)
2nd serve to the backhand
| Return | Now | Tour | Own | v Ethan | Value |
|---|---|---|---|---|---|
| BH through the middle | 54% | −2.9 | +2.0 | +0.5 | −0.4±2.4 |
| BH crosscourt | 38% | +1.0 | +1.3 | −2.4 | ±0.0±3.2 |
| BH down the line | 7% | −0.2 | −1.2 | −0.1 | −1.6±4.5 |
Lean BH crosscourt: +0.3±2.4 per 100 returns v the current mix (268 returns charted, inside the 90% margin)
Ethan Quinn returning
1st serve to the forehand
| Return | Now | Tour | Own | v Zhizhen | Value |
|---|---|---|---|---|---|
| FH slice through the middle | 46% | −4.2 | −0.3 | −1.6 | −6.1±2.3 |
| FH slice crosscourt | 28% | −4.3 | −1.0 | −1.7 | −7.1±2.6 |
| FH through the middle | 10% | +4.3 | −1.3 | −0.6 | +2.3±2.6 |
| FH crosscourt | 8% | +5.5 | −0.5 | −0.8 | +4.2±4.1 |
| FH slice down the line | 6% | −4.3 | −2.8 | −0.4 | −7.5±2.4 |
Lean FH crosscourt: +8.8±4.0 per 100 returns v the current mix (189 returns charted)
1st serve to the backhand
| Return | Now | Tour | Own | v Zhizhen | Value |
|---|---|---|---|---|---|
| BH through the middle | 32% | +6.4 | −2.5 | −0.4 | +3.6±2.7 |
| BH crosscourt | 21% | +8.8 | −1.9 | +0.7 | +7.7±3.5 |
| BH down the line | 21% | +4.2 | −3.2 | +1.2 | +2.2±4.6 |
| BH slice through the middle | 14% | −4.2 | −2.6 | −0.9 | −7.7±2.4 |
| BH slice crosscourt | 9% | +0.5 | −2.7 | −2.3 | −4.5±2.8 |
Lean BH crosscourt: +6.3±3.1 per 100 returns v the current mix (172 returns charted)
2nd serve to the forehand
| Return | Now | Tour | Own | v Zhizhen | Value |
|---|---|---|---|---|---|
| FH through the middle | 52% | −3.5 | +0.3 | −1.1 | −4.3±2.8 |
| FH crosscourt | 28% | −0.2 | +1.9 | +2.3 | +4.0±4.1 |
| FH slice crosscourt | 11% | −12.5 | −0.2 | ±0.0 | −12.7±1.4 |
| FH slice through the middle | 9% | −12.7 | −0.3 | ±0.0 | −13.0±1.0 |
Lean FH crosscourt: +7.7±3.3 per 100 returns v the current mix (54 returns charted)
2nd serve to the backhand
| Return | Now | Tour | Own | v Zhizhen | Value |
|---|---|---|---|---|---|
| BH through the middle | 38% | −2.9 | ±0.0 | −0.7 | −3.5±2.3 |
| BH crosscourt | 34% | +1.0 | +0.5 | −0.5 | +1.0±3.1 |
| BH down the line | 12% | −0.2 | −5.3 | +1.6 | −3.9±4.6 |
| FH through the middle | 12% | −2.9 | +0.5 | −1.1 | −3.5±2.2 |
| FH inside-out | 5% | +1.0 | +0.8 | −1.4 | +0.4±3.1 |
Lean BH crosscourt: +2.8±2.3 per 100 returns v the current mix (127 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.
Zhizhen Zhang
Favour
| Shot | Edge | Own | Theirs |
|---|---|---|---|
| FH to their forehand · serve +1 | +1.1±3.7 | −0.2 | +1.3 |
| BH to the middle · return | +0.4±2.1 | +1.4 | −1.0 |
| BH to their backhand · return | +0.2±2.9 | +2.4 | −2.2 |
| FH to their forehand · rally | ±0.0±3.1 | −0.2 | +0.2 |
| FH to the middle · rally | −0.3±2.3 | −1.1 | +0.8 |
| BH to the middle · rally | −1.9±2.1 | −0.3 | −1.6 |
Avoid
| Shot | Edge | Own | Theirs |
|---|---|---|---|
| FH to their backhand · serve +1 | −5.9±3.2 | −1.1 | −4.7 |
| BH to their backhand · rally | −4.0±2.4 | −1.9 | −2.0 |
| BH to their backhand · serve +1 | −3.7±3.3 | −2.2 | −1.5 |
| FH to the middle · return | −3.7±2.5 | −1.4 | −2.3 |
| FH to the middle · serve +1 | −2.4±2.6 | −1.5 | −0.9 |
Ethan Quinn
Favour
| Shot | Edge | Own | Theirs |
|---|---|---|---|
| BH slice to their backhand · rally | +2.5±2.6 | +1.7 | +0.8 |
| FH to their forehand · rally | +1.8±3.0 | −1.6 | +3.4 |
| FH to their backhand · serve +1 | +0.8±3.4 | −0.2 | +0.9 |
| FH to their forehand · return +1 | +0.5±4.1 | +0.9 | −0.4 |
| BH to their backhand · return +1 | +0.5±3.4 | +0.9 | −0.4 |
| FH to their backhand · rally | +0.5±2.9 | +1.5 | −1.1 |
Avoid
| Shot | Edge | Own | Theirs |
|---|---|---|---|
| FH to the middle · rally | −5.3±2.4 | −3.6 | −1.7 |
| FH to the middle · return | −3.1±2.5 | −2.5 | −0.6 |
| BH to the middle · return | −2.9±2.2 | −1.7 | −1.2 |
| BH to their forehand · return | −2.7±4.6 | −4.5 | +1.7 |
| BH to their backhand · serve +1 | −2.3±3.3 | −3.0 | +0.7 |
Against Ethan Quinn-like opponents
| Zhizhen Zhang v | Matches | Serve pts won | Return pts won |
|---|---|---|---|
| All charted opponents | – | 63.8% | 30.7% |
| Players most similar to Ethan Quinn | 1 | 67.5% | 33.3% |
Similar by tactical fingerprint: Arthur Rinderknech, Aleksandar Kovacevic, Alexei Popyrin, Zizou Bergs, Benjamin Bonzi, Fabio Fognini, Lucas Pouille, Tim Van Rijthoven, Kevin Anderson. When two players have rarely met, their records against these lookalikes fill the gap.