RallyIQ

Game plan

Matteo Arnaldi v Alexei Popyrin

Every number combines what Matteo Arnaldi does well with what Alexei Popyrin allows, each measured against the tour average and shrunk toward it when the sample is thin. Flip perspective

Forecast

Matteo Arnaldi wins, best of 3 68%90%: 38%–89% · best of 5: 73%
Serve points won 65.4% / 61.6% Matteo / Alexei · tour 63.5%
Strengths only, no similarity priors 68%serve 65.6% / 61.8%

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 Matteo Arnaldi's record against Alexei Popyrin's tactical lookalikes and in their charted head-to-heads (head-to-head: −2.3 on serve, +3.1 on return vs expectation (308 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

CareerMatteoAlexei
Direction choice±0.00 ±0.05
better than 57%
+0.04 ±0.06
better than 69%
Shot selection−0.18 ±0.32
better than 32%
+0.29 ±0.15
better than 79%
Execution−0.22 ±0.92
better than 56%
−0.73 ±0.59
better than 36%
Points left on the table2.65 ±0.11
lower than 45%
2.71 ±0.10
lower than 39%

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: Matteo Arnaldi +0.22, Alexei Popyrin −0.17. 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.

Matteo Arnaldi serving

Deuce court

1st serveNowMatteo winsv AlexeiMatchupOptimal
Wide47%70%73%70.1%±5.751% ▲
Body10%61%64%61.3%±10.90% ▼
T43%72%75%71.3%±6.249% ▲

Optimal v Alexei Popyrin: +0.4±0.6 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving T every time would read +1.6 per 100 first serves in before the returner adjusts.

Ad court

1st serveNowMatteo winsv AlexeiMatchupOptimal
Wide47%66%74%68.1%±6.234% ▼
Body3%66%69%71.0%±13.03%
T50%68%73%69.2%±6.363% ▲

Optimal v Alexei Popyrin: +0.1±0.7 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving body every time would read +2.3 per 100 first serves in before the returner adjusts.

Alexei Popyrin serving

Deuce court

1st serveNowAlexei winsv MatteoMatchupOptimal
Wide45%73%72%71.7%±5.658% ▲
Body9%62%65%63.8%±11.40% ▼
T45%78%76%79.5%±5.142% ▼

Optimal v Matteo Arnaldi: +0.5±0.7 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving T every time would read +5.0 per 100 first serves in before the returner adjusts.

Ad court

1st serveNowAlexei winsv MatteoMatchupOptimal
Wide52%76%71%74.4%±5.644% ▼
Body5%63%59%58.2%±13.40% ▼
T43%74%71%72.8%±5.956% ▲

Optimal v Matteo Arnaldi: +0.3±0.7 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving wide every time would read +1.5 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.

Matteo Arnaldi returning

1st serve to the forehand

ReturnNowTourOwnv AlexeiValue
FH through the middle39%+4.3+0.1+1.7+6.0±2.5
FH slice through the middle18%−4.2+0.8+0.3−3.1±2.3
FH down the line16%+1.7+1.9−4.4−0.8±4.4
FH crosscourt14%+5.5+2.5+1.7+9.7±4.3
FH slice down the line10%−4.3+4.3+1.5+1.5±3.2

Lean FH crosscourt: +6.6±3.9 per 100 returns v the current mix (340 returns charted)

1st serve to the backhand

ReturnNowTourOwnv AlexeiValue
BH through the middle42%+6.4+2.7+0.5+9.7±2.4
BH crosscourt23%+8.8+2.2−0.9+10.0±3.3
BH slice through the middle16%−4.2+0.2−2.0−6.0±2.4
BH down the line11%+4.2+4.0+1.0+9.3±4.6
BH slice crosscourt5%+0.5+1.0−3.4−1.9±2.8

Lean BH crosscourt: +3.9±2.8 per 100 returns v the current mix (324 returns charted)

2nd serve to the forehand

ReturnNowTourOwnv AlexeiValue
FH through the middle45%−3.5−0.5+0.3−3.7±2.7
FH crosscourt29%−0.2−3.1+1.5−1.8±4.3
FH down the line26%−1.8−2.9−3.4−8.2±4.6

Lean FH crosscourt: +2.5±3.5 per 100 returns v the current mix (126 returns charted, inside the 90% margin)

2nd serve to the backhand

ReturnNowTourOwnv AlexeiValue
BH through the middle42%−2.9+2.4−0.4−0.9±2.2
BH crosscourt38%+1.0+0.6−2.2−0.5±2.8
BH down the line8%−0.2+5.9+3.2+9.0±4.8
FH through the middle5%−2.9+0.4+0.3−2.2±2.0
FH inside-in4%+0.6−0.5+1.5+1.6±3.9

Lean BH down the line: +8.9±4.7 per 100 returns v the current mix (284 returns charted)

Alexei Popyrin returning

1st serve to the forehand

ReturnNowTourOwnv MatteoValue
FH through the middle44%+4.3+1.5+2.8+8.5±2.4
FH down the line21%+1.7+1.8+1.2+4.7±4.3
FH crosscourt19%+5.5+3.3+5.4+14.2±4.1
FH slice through the middle11%−4.2−1.3+1.0−4.5±2.3
FH slice down the line4%−4.3−0.6±0.0−4.8±2.6

Lean FH crosscourt: +7.5±3.6 per 100 returns v the current mix (584 returns charted)

1st serve to the backhand

ReturnNowTourOwnv MatteoValue
BH through the middle41%+6.4+1.0+2.1+9.5±2.4
BH down the line20%+4.2−1.4+2.1+5.0±4.4
BH slice through the middle15%−4.2+0.8+0.9−2.5±2.4
BH crosscourt13%+8.8+1.6+3.2+13.5±3.4
BH slice crosscourt7%+0.5−3.0−0.3−2.8±3.0

Lean BH crosscourt: +8.0±3.3 per 100 returns v the current mix (633 returns charted)

2nd serve to the forehand

ReturnNowTourOwnv MatteoValue
FH through the middle47%−3.5−0.9−0.5−4.9±2.8
FH crosscourt32%−0.2+5.2−0.1+4.8±4.4
FH down the line21%−1.8−4.1+1.1−4.7±4.7

Lean FH crosscourt: +6.6±3.4 per 100 returns v the current mix (139 returns charted)

2nd serve to the backhand

ReturnNowTourOwnv MatteoValue
BH through the middle37%−2.9−4.1−1.5−8.5±2.2
BH down the line21%−0.2−1.5+0.2−1.6±4.9
BH crosscourt18%+1.0−3.2−0.1−2.3±2.9
FH through the middle10%−2.9−2.4−0.5−5.7±2.4
FH inside-out9%+1.0−1.3+1.1+0.8±3.7

Lean FH inside-out: +5.4±3.7 per 100 returns v the current mix (463 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.

Matteo Arnaldi

Favour

ShotEdgeOwnTheirs
BH to their forehand · return+11.0±4.5+8.2+2.8
FH to the middle · rally+2.9±2.0+0.5+2.4
FH to the middle · return +1+2.8±2.6+0.1+2.7
FH to the middle · serve +1+2.3±2.5+1.4+0.9
BH to the middle · return+2.3±1.8+2.3−0.1
BH to the middle · serve +1+1.8±2.5+1.9−0.1

Avoid

ShotEdgeOwnTheirs
FH to their backhand · return−5.1±3.6−0.3−4.9
BH to their forehand · rally−4.3±3.9−4.5+0.2
BH slice to the middle · rally−3.4±2.4−1.6−1.8
FH to their backhand · return +1−2.9±3.7−3.9+1.0
FH to their forehand · return +1−2.1±3.7−1.1−1.1

Alexei Popyrin

Favour

ShotEdgeOwnTheirs
FH to their forehand · return+7.6±3.8+3.5+4.1
FH to their forehand · rally+3.3±2.3+2.3+1.0
FH to the middle · return+1.9±2.0−0.1+2.0
BH slice to their backhand · rally+1.8±2.3+0.2+1.6
FH to their forehand · serve +1+1.6±2.8+1.5+0.1
FH to their forehand · return +1+1.3±3.5−0.3+1.7

Avoid

ShotEdgeOwnTheirs
FH to their backhand · rally−4.8±2.4−1.1−3.6
BH to their backhand · rally−4.5±1.9−4.3−0.1
BH to their forehand · rally−3.7±3.8−4.8+1.1
BH to their forehand · return +1−2.7±4.9−2.3−0.5
BH to the middle · serve +1−2.7±2.6−0.9−1.8

Against Alexei Popyrin-like opponents

Matteo Arnaldi vMatchesServe pts wonReturn pts won
All charted opponents–59.7%35.9%
Alexei Popyrin (charted head-to-head)2 62.7%39.5%

Similar by tactical fingerprint: Stefanos Tsitsipas, Joao Fonseca, Hubert Hurkacz, Tallon Griekspoor, Zizou Bergs, Thanasi Kokkinakis, Dominic Thiem, Lucas Pouille, Lloyd Harris, Jo Wilfried Tsonga. When two players have rarely met, their records against these lookalikes fill the gap.

Charted head-to-head