RallyIQ

Game plan

Fabian Marozsan v Felix Auger Aliassime

Every number combines what Fabian Marozsan does well with what Felix Auger Aliassime allows, each measured against the tour average and shrunk toward it when the sample is thin. Flip perspective

Forecast

Fabian Marozsan wins, best of 3 26%90%: 7%–59% · best of 5: 21%
Serve points won 65.2% / 70.5% Fabian / Felix · tour 65.7%
Strengths only, no similarity priors 24%serve 65.0% / 70.8%

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 Fabian Marozsan's record against Felix Auger Aliassime's tactical lookalikes and in their charted head-to-heads (lookalikes: +2.0 on serve, +4.5 on return vs expectation (236 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

CareerFabianFelix
Direction choice+0.17 ±0.08
better than 91%
+0.01 ±0.05
better than 60%
Shot selection+0.04 ±0.26
better than 58%
+0.50 ±0.08
better than 93%
Execution+0.87 ±0.78
better than 93%
−0.79 ±0.31
better than 33%
Points left on the table2.29 ±0.13
lower than 85%
2.50 ±0.09
lower than 60%

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: Fabian Marozsan +0.35, Felix Auger Aliassime +0.82. 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.

Fabian Marozsan serving

Deuce court

1st serveNowFabian winsv FelixMatchupOptimal
Wide47%69%75%71.3%±4.760% ▲
Body10%69%64%69.8%±8.40% ▼
T44%69%74%67.5%±5.340% ▼

Optimal v Felix Auger Aliassime: +0.4±0.7 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving wide every time would read +1.8 per 100 first serves in before the returner adjusts.

Ad court

1st serveNowFabian winsv FelixMatchupOptimal
Wide50%71%72%69.5%±5.063% ▲
Body11%69%65%70.7%±8.70% ▼
T38%64%74%65.5%±5.637% ▼

Optimal v Felix Auger Aliassime: +0.1±0.7 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving body every time would read +2.6 per 100 first serves in before the returner adjusts.

Felix Auger Aliassime serving

Deuce court

1st serveNowFelix winsv FabianMatchupOptimal
Wide50%78%72%76.6%±4.245% ▼
Body8%66%61%63.8%±10.00% ▼
T42%78%79%81.2%±4.055% ▲

Optimal v Fabian Marozsan: +1.0±0.6 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.

Ad court

1st serveNowFelix winsv FabianMatchupOptimal
Wide46%75%72%74.8%±4.840% ▼
Body6%63%64%64.6%±11.60% ▼
T47%76%71%75.9%±4.660% ▲

Optimal v Fabian Marozsan: +0.8±0.6 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.

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.

Fabian Marozsan returning

1st serve to the forehand

ReturnNowTourOwnv FelixValue
FH through the middle39%+4.3+1.4−0.2+5.4±2.2
FH crosscourt19%+5.5+4.6−0.6+9.5±3.9
FH slice through the middle16%−4.2+0.1−1.3−5.4±2.1
FH down the line14%+1.7+4.8−3.3+3.2±3.8
FH slice down the line8%−4.3+1.0−1.0−4.3±3.1

Lean FH crosscourt: +6.5±3.3 per 100 returns v the current mix (360 returns charted)

1st serve to the backhand

ReturnNowTourOwnv FelixValue
BH through the middle40%+6.4+2.1+0.6+9.1±2.1
BH crosscourt30%+8.8+2.5−0.6+10.7±2.9
BH slice through the middle11%−4.2+0.2−2.0−6.0±2.2
BH down the line11%+4.2−1.2−1.4+1.6±4.2
BH slice crosscourt6%+0.5−0.9−2.6−3.0±2.7

Lean BH crosscourt: +4.9±2.3 per 100 returns v the current mix (317 returns charted)

2nd serve to the forehand

ReturnNowTourOwnv FelixValue
FH through the middle44%−3.5+0.6−0.3−3.2±2.4
FH down the line26%−1.8−0.4−2.8−5.0±4.1
FH crosscourt24%−0.2+1.6−5.6−4.2±3.9
FH slice through the middle6%−12.7−0.1−0.2−13.0±1.9

Lean FH through the middle: +1.3±2.0 per 100 returns v the current mix (104 returns charted, inside the 90% margin)

2nd serve to the backhand

ReturnNowTourOwnv FelixValue
BH through the middle47%−2.9+2.4+0.1−0.4±1.9
BH crosscourt40%+1.0+1.7−1.5+1.2±2.6
BH down the line13%−0.2+1.8+0.3+1.9±4.6

Lean BH down the line: +1.4±4.2 per 100 returns v the current mix (229 returns charted, inside the 90% margin)

Felix Auger Aliassime returning

1st serve to the forehand

ReturnNowTourOwnv FabianValue
FH through the middle50%+4.3−0.6+3.4+7.1±2.1
FH down the line21%+1.7−0.9+2.9+3.7±3.8
FH crosscourt20%+5.5−1.5+7.1+11.0±3.7
FH slice through the middle6%−4.2−1.3−0.6−6.1±2.3
FH slice down the line2%−4.3+0.1+0.9−3.3±3.0

Lean FH crosscourt: +5.0±3.2 per 100 returns v the current mix (1741 returns charted)

1st serve to the backhand

ReturnNowTourOwnv FabianValue
BH through the middle39%+6.4+1.5+3.5+11.4±1.9
BH crosscourt34%+8.8+0.1+4.9+13.8±2.6
BH slice through the middle11%−4.2−0.9+0.3−4.8±2.3
BH down the line7%+4.2+1.4+3.4+9.0±4.3
BH slice crosscourt6%+0.5−1.8+1.7+0.4±2.8

Lean BH crosscourt: +4.5±1.9 per 100 returns v the current mix (2015 returns charted)

2nd serve to the forehand

ReturnNowTourOwnv FabianValue
FH through the middle47%−3.5−0.1+1.0−2.6±2.6
FH crosscourt30%−0.2−0.5+0.9+0.2±4.2
FH down the line19%−1.8−2.0−0.7−4.5±4.7
FH slice through the middle2%−12.7+0.3±0.0−12.4±1.2
FH slice down the line1%−9.4+0.1±0.0−9.4±1.4

Lean FH crosscourt: +2.6±3.3 per 100 returns v the current mix (403 returns charted, inside the 90% margin)

2nd serve to the backhand

ReturnNowTourOwnv FabianValue
BH crosscourt36%+1.0−3.2+1.2−0.9±2.5
BH through the middle34%−2.9−1.3+1.0−3.2±1.9
FH through the middle9%−2.9−0.2+1.0−2.1±2.3
BH down the line8%−0.2+2.0+3.7+5.5±4.9
FH inside-in6%+0.6+1.4+0.9+2.8±4.4

Lean BH down the line: +6.6±4.6 per 100 returns v the current mix (1299 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.

Fabian Marozsan

Favour

ShotEdgeOwnTheirs
FH to their forehand · serve +1+3.5±3.9+0.8+2.6
FH to their forehand · return +1+2.8±4.8+2.7±0.0
BH to their forehand · rally+2.5±4.7+1.0+1.5
BH to their backhand · return +1+2.0±4.0−0.7+2.7
FH to the middle · return+1.8±2.9+1.9±0.0
FH to the middle · serve +1+1.6±3.0+0.6+0.9

Avoid

ShotEdgeOwnTheirs
BH to their forehand · return−4.8±5.3+0.3−5.0
FH to their backhand · return +1−4.3±4.8+1.0−5.3
BH to their backhand · serve +1−3.7±3.5−0.6−3.2
BH slice to their backhand · rally−3.3±2.9−3.9+0.6
FH to their backhand · return−3.1±4.6−0.3−2.8

Felix Auger Aliassime

Favour

ShotEdgeOwnTheirs
FH to their forehand · return+6.5±4.8+0.6+5.9
BH to their forehand · return+6.2±5.3+1.4+4.8
BH to their forehand · serve +1+4.3±5.6+2.6+1.7
BH to their backhand · return +1+2.5±4.1+0.8+1.6
FH to the middle · rally+2.2±2.7+0.6+1.7
FH to their forehand · serve +1+2.1±3.9−0.6+2.7

Avoid

ShotEdgeOwnTheirs
BH to their backhand · rally−4.3±2.8−4.1−0.3
BH to the middle · return +1−3.0±2.9−2.7−0.2
BH slice to the middle · rally−2.4±2.7−1.5−1.0
FH to their backhand · return +1−1.7±4.7−2.1+0.4
FH to their forehand · return +1−1.6±4.8−4.5+2.9

Against Felix Auger Aliassime-like opponents

Fabian Marozsan vMatchesServe pts wonReturn pts won
All charted opponents–61.6%34.5%
Players most similar to Felix Auger Aliassime1 64.6%37.4%

Similar by tactical fingerprint: Casper Ruud, Stefanos Tsitsipas, Arthur Fils, Tommy Paul, Alexei Popyrin, Zizou Bergs, Thanasi Kokkinakis, Lloyd Harris, J J Wolf, Leonardo Mayer. When two players have rarely met, their records against these lookalikes fill the gap.