Game plan
Gijs Brouwer v Juan Martin Del Potro
Every number combines what Gijs Brouwer does well with what Juan Martin Del Potro 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. At least one of them is no longer active or has too little charted in the last three seasons, so both are compared on their careers.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 Gijs Brouwer's record against Juan Martin Del Potro's tactical lookalikes and in their charted head-to-heads. 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 | Gijs | Juan |
|---|---|---|
| Direction choice | +0.02 ±0.09 better than 62% | +0.16 ±0.04 better than 90% |
| Shot selection | −0.08 ±0.26 better than 42% | −0.40 ±0.07 better than 17% |
| Execution | −1.66 ±0.67 better than 7% | +1.15 ±0.18 better than 97% |
| Points left on the table | 3.10 ±0.19 lower than 16% | 2.10 ±0.05 lower than 98% |
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.
Gijs Brouwer serving
Deuce court
| 1st serve | Now | Gijs wins | v Juan | Matchup | Optimal |
|---|---|---|---|---|---|
| Wide | 30% | 82% | 72% | 81.0%±5.9 | 44% ▲ |
| Body | 12% | 57% | 61% | 54.8%±9.8 | 0% ▼ |
| T | 58% | 69% | 76% | 70.6%±4.7 | 56% ▼ |
Optimal v Juan Martin Del Potro: +1.0±0.8 per 100 first serves (faults included) over the current mix. Serving wide every time would read +9.0 per 100 first serves in before the returner adjusts.
Ad court
| 1st serve | Now | Gijs wins | v Juan | Matchup | Optimal |
|---|---|---|---|---|---|
| Wide | 60% | 67% | 72% | 66.6%±5.1 | 73% ▲ |
| Body | 7% | 68% | 63% | 67.5%±10.2 | 0% ▼ |
| T | 33% | 71% | 72% | 70.5%±6.9 | 27% ▼ |
Optimal v Juan Martin Del Potro: +0.3±0.6 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving T every time would read +2.6 per 100 first serves in before the returner adjusts.
Juan Martin Del Potro serving
Deuce court
| 1st serve | Now | Juan wins | v Gijs | Matchup | Optimal |
|---|---|---|---|---|---|
| Wide | 35% | 73% | 75% | 75.4%±5.3 | 48% ▲ |
| Body | 12% | 65% | 59% | 60.7%±9.1 | 0% ▼ |
| T | 53% | 76% | 69% | 69.9%±6.0 | 52% ▼ |
Optimal v Gijs Brouwer: +1.1±0.7 per 100 first serves (faults included) over the current mix. Serving wide every time would read +4.7 per 100 first serves in before the returner adjusts.
Ad court
| 1st serve | Now | Juan wins | v Gijs | Matchup | Optimal |
|---|---|---|---|---|---|
| Wide | 47% | 78% | 78% | 83.1%±5.0 | 60% ▲ |
| Body | 10% | 64% | 70% | 70.9%±8.5 | 0% ▼ |
| T | 43% | 75% | 73% | 75.9%±5.3 | 40% ▼ |
Optimal v Gijs Brouwer: +0.8±0.7 per 100 first serves (faults included) over the current mix. Serving wide every time would read +4.3 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.
Gijs Brouwer returning
1st serve to the forehand
| Return | Now | Tour | Own | v Juan | Value |
|---|---|---|---|---|---|
| FH through the middle | 51% | +4.3 | −0.3 | +1.4 | +5.4±2.3 |
| FH down the line | 27% | +1.7 | −3.6 | −1.9 | −3.8±3.8 |
| FH crosscourt | 22% | +5.5 | +1.0 | +1.2 | +7.7±3.5 |
Lean FH crosscourt: +4.3±3.2 per 100 returns v the current mix (179 returns charted)
1st serve to the backhand
| Return | Now | Tour | Own | v Juan | Value |
|---|---|---|---|---|---|
| BH slice through the middle | 30% | −4.2 | −1.7 | +1.2 | −4.7±1.9 |
| BH through the middle | 27% | +6.4 | −2.8 | −0.2 | +3.4±2.1 |
| BH down the line | 13% | +4.2 | +0.2 | −2.0 | +2.4±3.6 |
| BH slice down the line | 12% | −8.4 | +0.6 | −1.0 | −8.8±2.9 |
| BH crosscourt | 12% | +8.8 | −3.2 | +3.2 | +8.9±2.9 |
Lean BH crosscourt: +9.5±2.8 per 100 returns v the current mix (267 returns charted)
2nd serve to the forehand
| Return | Now | Tour | Own | v Juan | Value |
|---|---|---|---|---|---|
| FH through the middle | 51% | −3.5 | −2.2 | −0.5 | −6.2±2.3 |
| FH crosscourt | 35% | −0.2 | −0.6 | +1.0 | +0.2±3.7 |
| FH down the line | 14% | −1.8 | −1.5 | −2.4 | −5.7±3.8 |
Lean FH crosscourt: +4.1±2.7 per 100 returns v the current mix (85 returns charted)
2nd serve to the backhand
| Return | Now | Tour | Own | v Juan | Value |
|---|---|---|---|---|---|
| BH through the middle | 35% | −2.9 | −0.6 | −0.4 | −3.9±2.0 |
| BH crosscourt | 22% | +1.0 | −2.0 | +1.2 | +0.2±2.7 |
| BH down the line | 22% | −0.2 | −0.1 | +0.7 | +0.3±3.8 |
| FH through the middle | 8% | −2.9 | −1.3 | −0.5 | −4.7±1.6 |
| BH slice through the middle | 7% | −11.3 | −0.1 | +0.2 | −11.2±1.9 |
Lean BH down the line: +2.6±3.1 per 100 returns v the current mix (144 returns charted, inside the 90% margin)
Juan Martin Del Potro returning
1st serve to the forehand
| Return | Now | Tour | Own | v Gijs | Value |
|---|---|---|---|---|---|
| FH through the middle | 46% | +4.3 | +1.2 | ±0.0 | +5.5±2.2 |
| FH crosscourt | 30% | +5.5 | +2.6 | −1.1 | +7.0±3.5 |
| FH down the line | 16% | +1.7 | +2.5 | −1.3 | +2.9±3.6 |
| FH slice through the middle | 4% | −4.2 | −1.1 | +0.2 | −5.1±2.3 |
| FH slice down the line | 2% | −4.3 | −2.4 | ±0.0 | −6.7±2.3 |
Lean FH crosscourt: +2.3±2.7 per 100 returns v the current mix (2410 returns charted, inside the 90% margin)
1st serve to the backhand
| Return | Now | Tour | Own | v Gijs | Value |
|---|---|---|---|---|---|
| BH through the middle | 30% | +6.4 | +1.9 | +0.7 | +9.0±1.9 |
| BH crosscourt | 25% | +8.8 | +3.2 | −2.7 | +9.3±2.8 |
| BH slice through the middle | 22% | −4.2 | +2.3 | +0.3 | −1.6±2.0 |
| BH slice crosscourt | 12% | +0.5 | +1.1 | −0.1 | +1.5±2.2 |
| BH down the line | 7% | +4.2 | +6.0 | −3.1 | +7.1±4.1 |
Lean BH crosscourt: +4.4±2.3 per 100 returns v the current mix (2945 returns charted)
2nd serve to the forehand
| Return | Now | Tour | Own | v Gijs | Value |
|---|---|---|---|---|---|
| FH through the middle | 37% | −3.5 | +0.3 | ±0.0 | −3.2±2.6 |
| FH crosscourt | 34% | −0.2 | −2.2 | −2.7 | −5.1±3.8 |
| FH down the line | 18% | −1.8 | +1.4 | −1.6 | −1.9±4.1 |
| FH slice through the middle | 4% | −12.7 | +1.4 | ±0.0 | −11.2±1.6 |
| FH slice down the line | 3% | −9.4 | +2.6 | ±0.0 | −6.8±2.0 |
Lean FH down the line: +2.0±3.7 per 100 returns v the current mix (605 returns charted, inside the 90% margin)
2nd serve to the backhand
| Return | Now | Tour | Own | v Gijs | Value |
|---|---|---|---|---|---|
| BH crosscourt | 47% | +1.0 | +0.9 | +0.6 | +2.6±2.6 |
| BH through the middle | 37% | −2.9 | +0.3 | −0.7 | −3.3±1.9 |
| BH down the line | 6% | −0.2 | −0.8 | −2.0 | −3.0±4.8 |
| FH through the middle | 4% | −2.9 | +0.4 | ±0.0 | −2.5±2.4 |
| FH inside-out | 2% | +1.0 | +0.4 | −1.6 | −0.2±3.3 |
Lean BH crosscourt: +3.1±1.6 per 100 returns v the current mix (1911 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 grass. Each player's grass record is shrunk toward their all-surface one, so a thin sample on it moves the numbers only a little.
Gijs Brouwer
Favour
| Shot | Edge | Own | Theirs |
|---|---|---|---|
| BH slice to the middle · rally | +3.5±2.5 | +0.9 | +2.7 |
| BH to the middle · rally | +2.5±2.4 | −0.1 | +2.5 |
| BH to their backhand · return | +1.9±3.7 | −0.5 | +2.4 |
| FH to their backhand · return | +1.1±4.3 | −1.9 | +3.0 |
| FH to their forehand · return +1 | +0.7±4.8 | −4.2 | +4.9 |
| BH slice to the middle · return | +0.6±2.6 | −1.5 | +2.1 |
Avoid
| Shot | Edge | Own | Theirs |
|---|---|---|---|
| FH to their forehand · return | −9.9±5.1 | −5.2 | −4.7 |
| FH to their forehand · serve +1 | −2.7±3.8 | −3.5 | +0.9 |
| BH to their backhand · rally | −1.8±2.8 | −3.9 | +2.1 |
| FH to their forehand · rally | −1.7±3.0 | −2.0 | +0.3 |
| BH to their forehand · rally | −1.1±4.1 | +0.9 | −2.0 |
Juan Martin Del Potro
Favour
| Shot | Edge | Own | Theirs |
|---|---|---|---|
| BH to their forehand · serve +1 | +5.3±5.2 | +5.4 | −0.2 |
| FH to the middle · return | +4.6±2.8 | +4.4 | +0.2 |
| FH to their backhand · return +1 | +4.3±4.5 | +2.9 | +1.5 |
| BH to their backhand · return +1 | +4.1±4.1 | +2.8 | +1.4 |
| BH slice to the middle · return | +4.0±2.6 | +4.1 | −0.1 |
| FH to their forehand · return +1 | +3.2±4.8 | +2.7 | +0.5 |
Avoid
| Shot | Edge | Own | Theirs |
|---|---|---|---|
| BH to their backhand · rally | −3.7±2.6 | +2.3 | −5.9 |
| BH to their forehand · return +1 | −1.6±5.7 | +1.6 | −3.2 |
| BH to the middle · rally | −1.5±2.3 | +1.3 | −2.7 |
| FH to their backhand · serve +1 | −0.5±3.6 | −1.7 | +1.2 |
| BH slice to their backhand · rally | −0.2±2.6 | +1.6 | −1.7 |
Against Juan Martin Del Potro-like opponents
| Gijs Brouwer v | Matches | Serve pts won | Return pts won |
|---|---|---|---|
| All charted opponents | – | 63.5% | 35.4% |
Similar by tactical fingerprint: Stefanos Tsitsipas, Andrey Rublev, Gael Monfils, Miomir Kecmanovic, Borna Coric, David Goffin, Dominic Thiem, Philipp Kohlschreiber, Nicolas Almagro, Nikolay Davydenko. When two players have rarely met, their records against these lookalikes fill the gap.