RallyIQ

Game plan

Reilly Opelka v Jerzy Janowicz

Every number combines what Reilly Opelka does well with what Jerzy Janowicz allows, each measured against the tour average and shrunk toward it when the sample is thin. Flip perspective

Forecast

Reilly Opelka wins, best of 3 50%90%: 25%–75% · best of 5: 50%
Serve points won 68.4% / 68.5% Reilly / Jerzy · tour 61.3%
Strengths only, no similarity priors 55%serve 68.9% / 67.9%

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 At least one of them is no longer active or has too little charted in the last three seasons, so both are compared on their careers.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 Reilly Opelka's record against Jerzy Janowicz's tactical lookalikes and in their charted head-to-heads (lookalikes: −5.1 on serve, −7.6 on return vs expectation (288 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

CareerReillyJerzy
Direction choice−0.19 ±0.11
better than 16%
−0.09 ±0.21
better than 33%
Shot selection+0.14 ±0.11
better than 69%
+0.27 ±0.07
better than 77%
Execution−1.23 ±0.68
better than 18%
−1.30 ±0.85
better than 15%

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.

Reilly Opelka serving

Deuce court

1st serveNowReilly winsv JerzyMatchupOptimal
Wide50%77%77%80.9%±5.663% ▲
Body9%62%73%72.2%±9.90% ▼
T41%80%76%81.7%±5.937% ▼

Optimal v Jerzy Janowicz: +1.0±0.7 per 100 first serves (faults included) over the current mix. Serving T every time would read +1.3 per 100 first serves in before the returner adjusts.

Ad court

1st serveNowReilly winsv JerzyMatchupOptimal
Wide49%82%74%82.6%±5.962% ▲
Body7%61%61%58.4%±12.50% ▼
T44%77%72%76.9%±6.338% ▼

Optimal v Jerzy Janowicz: +1.0±0.7 per 100 first serves (faults included) over the current mix. Serving wide every time would read +4.2 per 100 first serves in before the returner adjusts.

Jerzy Janowicz serving

Deuce court

1st serveNowJerzy winsv ReillyMatchupOptimal
Wide43%68%80%76.6%±6.043%
Body20%70%70%75.7%±8.57% ▼
T37%85%83%90.7%±4.250% ▲

Optimal v Reilly Opelka: +1.3±0.9 per 100 first serves (faults included) over the current mix. Serving T every time would read +9.1 per 100 first serves in before the returner adjusts.

Ad court

1st serveNowJerzy winsv ReillyMatchupOptimal
Wide37%74%81%82.1%±6.050% ▲
Body22%63%72%72.0%±9.39% ▼
T41%72%80%80.2%±6.441%

Optimal v Reilly Opelka: +0.6±0.8 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving wide every time would read +3.0 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.

Reilly Opelka returning

1st serve to the forehand

ReturnNowTourOwnv JerzyValue
FH through the middle41%+4.3−3.8+1.3+1.8±2.7
FH down the line21%+1.7−0.8+3.0+3.9±3.9
FH slice through the middle16%−4.2−2.6−0.7−7.5±2.2
FH crosscourt13%+5.5−1.9−1.0+2.5±4.1
FH slice down the line4%−4.3+1.2+2.0−1.0±3.1

Lean FH down the line: +3.4±3.3 per 100 returns v the current mix (809 returns charted)

1st serve to the backhand

ReturnNowTourOwnv JerzyValue
BH through the middle57%+6.4−2.2−2.6+1.7±2.4
BH crosscourt24%+8.8−2.2+0.5+7.2±3.2
BH slice through the middle7%−4.2−1.9+1.1−4.9±2.5
BH down the line7%+4.2+2.8−1.9+5.1±4.2
BH slice crosscourt3%+0.5−1.7−0.6−1.8±2.7

Lean BH crosscourt: +4.7±2.8 per 100 returns v the current mix (713 returns charted)

2nd serve to the forehand

ReturnNowTourOwnv JerzyValue
FH through the middle43%−3.5−4.5+0.2−7.7±2.7
FH down the line31%−1.8−4.5−1.7−8.0±4.2
FH crosscourt15%−0.2−5.8−1.5−7.5±4.2
FH slice through the middle6%−12.7+0.1±0.0−12.6±1.4
BH through the middle3%+0.1−0.5−3.1−3.5±1.7

Lean FH crosscourt: +0.4±4.0 per 100 returns v the current mix (219 returns charted, inside the 90% margin)

2nd serve to the backhand

ReturnNowTourOwnv JerzyValue
BH through the middle53%−2.9−2.9−3.1−8.9±2.3
BH crosscourt34%+1.0−3.5+2.3−0.2±3.1
BH down the line9%−0.2−1.5+1.0−0.8±4.4
FH through the middle2%−2.9+0.3+0.2−2.3±2.1
FH inside-out2%+1.0+0.7−1.7±0.0±2.7

Lean BH crosscourt: +4.7±2.4 per 100 returns v the current mix (482 returns charted)

Jerzy Janowicz returning

1st serve to the forehand

ReturnNowTourOwnv ReillyValue
FH through the middle52%+4.3+0.2+1.2+5.6±2.6
FH down the line27%+1.7+3.8+4.4+9.9±4.5
FH crosscourt21%+5.5±0.0+1.7+7.2±4.2

Lean FH down the line: +2.8±3.6 per 100 returns v the current mix (148 returns charted, inside the 90% margin)

1st serve to the backhand

ReturnNowTourOwnv ReillyValue
BH through the middle42%+6.4+0.1+0.8+7.3±2.5
BH crosscourt29%+8.8−1.8+0.3+7.3±3.5
BH down the line13%+4.2+1.1−2.0+3.3±4.2
BH slice through the middle9%−4.2−0.3−1.5−6.0±2.0
BH slice crosscourt7%+0.5+0.9−1.8−0.4±2.6

Lean BH crosscourt: +2.2±2.7 per 100 returns v the current mix (112 returns charted, inside the 90% margin)

2nd serve to the backhand

ReturnNowTourOwnv ReillyValue
BH through the middle55%−2.9−0.8−1.1−4.8±2.1
BH crosscourt33%+1.0−1.6−2.1−2.6±2.9
BH down the line12%−0.2−2.5−0.1−2.8±4.2

Lean BH crosscourt: +1.2±2.3 per 100 returns v the current mix (66 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 on clay. Each player's clay record is shrunk toward their all-surface one, so a thin sample on it moves the numbers only a little.

Reilly Opelka

Favour

ShotEdgeOwnTheirs
FH to their forehand · serve +1+0.6±4.4−3.3+3.9
FH to their backhand · rally−1.2±3.6−5.0+3.8
BH to their backhand · serve +1−1.9±3.8−3.1+1.1
FH to their backhand · serve +1−3.6±3.9−5.2+1.7
FH to their forehand · rally−4.4±3.9−5.0+0.7
BH to their backhand · return−5.1±3.4−6.6+1.6

Avoid

ShotEdgeOwnTheirs
BH to the middle · return−9.6±2.3−5.6−4.0
BH to their backhand · rally−7.7±3.2−7.7−0.1
FH to the middle · return−5.9±2.9−7.3+1.4
BH to their backhand · return−5.1±3.4−6.6+1.6
FH to their forehand · rally−4.4±3.9−5.0+0.7

Jerzy Janowicz

Favour

ShotEdgeOwnTheirs
FH to their forehand · return +1+3.4±5.0−2.5+5.9
FH to their backhand · return+2.0±4.7+0.9+1.1
FH to the middle · return+0.3±2.8+0.4−0.1
FH to their forehand · rally−0.5±4.0+0.6−1.1
FH to their backhand · serve +1−0.9±4.0+0.7−1.6
BH to their backhand · rally−3.5±3.3−1.0−2.5

Avoid

ShotEdgeOwnTheirs
FH to their forehand · serve +1−6.1±4.5−5.4−0.6
FH to their backhand · rally−4.9±3.8−2.6−2.4
BH to the middle · return−4.4±2.5−0.6−3.8
BH to their backhand · return−3.8±3.7−2.1−1.8
BH to their backhand · rally−3.5±3.3−1.0−2.5

Against Jerzy Janowicz-like opponents

Reilly Opelka vMatchesServe pts wonReturn pts won
All charted opponents–70.0%27.5%
Players most similar to Jerzy Janowicz2 59.2%21.4%

Similar by tactical fingerprint: Carlos Alcaraz, Alexander Bublik, Fabian Marozsan, Hamad Medjedovic, Zizou Bergs, Quentin Halys, Lorenzo Sonego, Alejandro Davidovich Fokina, Martin Klizan, Lukas Rosol. When two players have rarely met, their records against these lookalikes fill the gap.