RallyIQ

Game plan

Alexandr Dolgopolov v Quentin Halys

Every number combines what Alexandr Dolgopolov does well with what Quentin Halys allows, each measured against the tour average and shrunk toward it when the sample is thin. Flip perspective

Forecast

Alexandr Dolgopolov wins, best of 3 70%90%: 45%–88% · best of 5: 75%
Serve points won 69.8% / 65.4% Alexandr / Quentin · tour 63.4%
Strengths only, no similarity priors 72%serve 69.9% / 65.2%

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 At least one of them is no longer active or has too little charted in the last three seasons, so both are compared on their careers.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 Alexandr Dolgopolov's record against Quentin Halys's tactical lookalikes and in their charted head-to-heads (lookalikes: −2.1 on serve, −3.0 on return vs expectation (200 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

CareerAlexandrQuentin
Direction choice+0.18 ±0.06
better than 92%
+0.36 ±0.08
better than 99%
Shot selection−0.24 ±0.16
better than 28%
−0.28 ±0.29
better than 25%
Execution−0.90 ±0.66
better than 28%
+0.81 ±1.23
better than 92%
Points left on the table2.15 ±0.12
lower than 96%
2.16 ±0.23
lower than 96%

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.

Alexandr Dolgopolov serving

Deuce court

1st serveNowAlexandr winsv QuentinMatchupOptimal
Wide65%73%82%81.9%±5.459% ▼
Body7%63%68%68.1%±13.70% ▼
T28%80%85%88.8%±4.641% ▲

Optimal v Quentin Halys: +0.8±0.8 per 100 first serves (faults included) over the current mix. Serving T every time would read +6.0 per 100 first serves in before the returner adjusts.

Ad court

1st serveNowAlexandr winsv QuentinMatchupOptimal
Wide58%70%83%81.0%±5.952% ▼
Body7%62%57%56.6%±15.40% ▼
T35%74%81%82.5%±6.348% ▲

Optimal v Quentin Halys: +0.8±0.8 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving T every time would read +2.8 per 100 first serves in before the returner adjusts.

Quentin Halys serving

Deuce court

1st serveNowQuentin winsv AlexandrMatchupOptimal
Wide51%79%75%80.7%±5.364% ▲
Body1%60%68%65.3%±14.60% ▼
T48%79%72%76.3%±6.936% ▼

Optimal v Alexandr Dolgopolov: +1.0±0.8 per 100 first serves (faults included) over the current mix. Serving wide every time would read +2.3 per 100 first serves in before the returner adjusts.

Ad court

1st serveNowQuentin winsv AlexandrMatchupOptimal
Wide50%81%74%82.1%±6.438% ▼
Body2%63%60%59.6%±15.80% ▼
T48%76%76%79.9%±6.162% ▲

Optimal v Alexandr Dolgopolov: +0.5±0.8 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving wide every time would read +1.4 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.

Alexandr Dolgopolov returning

1st serve to the forehand

ReturnNowTourOwnv QuentinValue
FH slice through the middle36%−4.2+1.7+0.8−1.7±2.1
FH slice down the line20%−4.3+0.6+1.3−2.4±2.8
FH down the line18%+1.7−7.1−0.4−5.9±4.5
FH through the middle15%+4.3−3.0+2.4+3.7±3.1
FH slice crosscourt6%−4.3+1.7±0.0−2.6±1.9
FH crosscourt5%+5.5−2.3+1.1+4.3±4.2

Lean FH crosscourt: +5.9±4.2 per 100 returns v the current mix (401 returns charted)

1st serve to the backhand

ReturnNowTourOwnv QuentinValue
BH through the middle47%+6.4−1.3+0.8+5.9±2.7
BH crosscourt30%+8.8+0.1−0.3+8.5±3.4
BH down the line10%+4.2−1.4+0.4+3.3±4.1
BH slice through the middle6%−4.2−1.6+1.1−4.7±2.3
BH slice crosscourt4%+0.5−1.7−1.0−2.2±2.4

Lean BH crosscourt: +3.5±2.7 per 100 returns v the current mix (344 returns charted)

2nd serve to the forehand

ReturnNowTourOwnv QuentinValue
FH down the line39%−1.8+2.3+0.2+0.7±4.7
FH through the middle24%−3.5−1.7+2.8−2.4±2.8
FH slice down the line17%−9.4−0.6±0.0−10.0±1.9
FH crosscourt10%−0.2−0.4+0.3−0.3±3.5
FH slice through the middle10%−12.7−0.4±0.0−13.0±1.2

Lean FH down the line: +4.0±2.9 per 100 returns v the current mix (94 returns charted)

2nd serve to the backhand

ReturnNowTourOwnv QuentinValue
BH crosscourt52%+1.0−0.9+2.3+2.5±3.2
BH through the middle31%−2.9−1.6+0.9−3.6±2.5
BH down the line13%−0.2−0.6+2.8+2.0±4.6
BH slice crosscourt5%−4.0±0.0±0.0−4.0±1.3

Lean BH crosscourt: +2.2±1.8 per 100 returns v the current mix (175 returns charted)

Quentin Halys returning

1st serve to the forehand

ReturnNowTourOwnv AlexandrValue
FH through the middle32%+4.3−1.1+0.6+3.8±2.8
FH crosscourt20%+5.5+3.2−0.2+8.4±4.3
FH slice through the middle19%−4.2+1.9+0.9−1.4±2.3
FH down the line14%+1.7+2.0−1.1+2.6±4.4
FH slice down the line8%−4.3+1.3−0.6−3.5±2.8

Lean FH crosscourt: +6.0±3.7 per 100 returns v the current mix (166 returns charted)

1st serve to the backhand

ReturnNowTourOwnv AlexandrValue
BH crosscourt40%+8.8+2.5+0.1+11.5±3.5
BH through the middle30%+6.4−2.5−0.9+3.0±2.8
BH slice through the middle14%−4.2+0.8+1.0−2.4±2.4
BH slice crosscourt8%+0.5−0.2+1.5+1.8±2.8
BH down the line4%+4.2−1.2−1.0+1.9±3.8

Lean BH crosscourt: +6.5±2.3 per 100 returns v the current mix (177 returns charted)

2nd serve to the forehand

ReturnNowTourOwnv AlexandrValue
FH through the middle44%−3.5−1.6+2.0−3.2±2.6
FH crosscourt38%−0.2+1.8−0.8+0.8±4.1
FH down the line18%−1.8+0.3−0.4−1.9±4.0

Lean FH crosscourt: +2.2±2.9 per 100 returns v the current mix (50 returns charted, inside the 90% margin)

2nd serve to the backhand

ReturnNowTourOwnv AlexandrValue
BH crosscourt58%+1.0−0.1+1.1+2.0±3.1
BH through the middle27%−2.9+0.6−3.4−5.7±2.4
BH down the line11%−0.2+1.5+1.3+2.6±4.5
FH through the middle4%−2.9+0.4+2.0−0.6±1.8

Lean BH crosscourt: +2.1±1.5 per 100 returns v the current mix (113 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.

Alexandr Dolgopolov

Favour

ShotEdgeOwnTheirs
FH to their forehand · serve +1+5.4±3.8−0.3+5.7
FH to their backhand · serve +1+5.3±3.3−1.0+6.3
BH to their backhand · serve +1+4.1±3.0−0.5+4.7
FH to their backhand · rally+3.3±2.9−1.6+4.9
BH to their backhand · return +1+1.3±3.2−1.2+2.5
FH to their forehand · rally+0.7±3.1−3.1+3.8

Avoid

ShotEdgeOwnTheirs
FH to their backhand · return−3.6±3.8−3.5−0.1
BH to the middle · return−1.9±2.1−1.5−0.4
BH to their backhand · return−1.1±2.9−1.8+0.7
BH to their backhand · rally−0.7±2.2−1.4+0.7
FH to the middle · return−0.1±2.8−3.4+3.3

Quentin Halys

Favour

ShotEdgeOwnTheirs
FH to their backhand · serve +1+2.8±3.4+2.6+0.2
FH to their forehand · return+2.5±4.3+3.7−1.2
BH to their backhand · return+0.6±2.8+0.3+0.3
FH to their forehand · rally−0.2±3.0−0.9+0.7
BH to their backhand · rally−0.3±2.4−1.7+1.5
BH to their backhand · return +1−0.5±3.3+0.7−1.2

Avoid

ShotEdgeOwnTheirs
BH to their forehand · rally−5.7±4.1−3.6−2.1
BH to the middle · return−4.7±2.4−1.4−3.2
FH to their forehand · serve +1−4.5±3.8−1.0−3.4
FH to their backhand · rally−1.2±3.0−0.4−0.8
FH to the middle · return−1.1±2.5−2.2+1.0

Against Quentin Halys-like opponents

Alexandr Dolgopolov vMatchesServe pts wonReturn pts won
All charted opponents–61.8%34.3%
Players most similar to Quentin Halys1 63.4%31.3%

Similar by tactical fingerprint: Arthur Fils, Fabian Marozsan, Sebastian Korda, James Duckworth, Marin Cilic, Matteo Arnaldi, Sebastian Ofner, Lucas Pouille, Sam Querrey, Jo Wilfried Tsonga. When two players have rarely met, their records against these lookalikes fill the gap.