RallyIQ

Game plan

Nicolas Almagro v Juan Martin Del Potro

Every number combines what Nicolas Almagro 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

Nicolas Almagro wins, best of 3 9%90%: 3%–20% · best of 5: 5%
Serve points won 62.4% / 73.6% Nicolas / Juan · tour 63.8%
Strengths only, no similarity priors 9%serve 62.2% / 73.2%

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 At least one of them is no longer active or has too little charted in the last three seasons, so both are compared on their careers.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 Nicolas Almagro's record against Juan Martin Del Potro's tactical lookalikes and in their charted head-to-heads (head-to-head: +2.1 on serve, −5.3 on return vs expectation (259 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

CareerNicolasJuan
Direction choice+0.12 ±0.06
better than 84%
+0.16 ±0.04
better than 90%
Shot selection+0.19 ±0.11
better than 72%
−0.40 ±0.07
better than 17%
Execution−0.16 ±0.52
better than 59%
+1.15 ±0.18
better than 97%
Points left on the table2.18 ±0.11
lower than 94%
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.

Nicolas Almagro serving

Deuce court

1st serveNowNicolas winsv JuanMatchupOptimal
Wide38%71%72%69.8%±5.330% ▼
Body5%63%61%60.9%±10.80% ▼
T57%80%76%81.1%±4.070% ▲

Optimal v Juan Martin Del Potro: +0.5±0.6 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving T every time would read +5.4 per 100 first serves in before the returner adjusts.

Ad court

1st serveNowNicolas winsv JuanMatchupOptimal
Wide47%74%72%73.4%±5.360% ▲
Body12%55%63%55.4%±9.50% ▼
T41%69%72%68.8%±5.940%

Optimal v Juan Martin Del Potro: +0.6±0.7 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving wide every time would read +4.0 per 100 first serves in before the returner adjusts.

Juan Martin Del Potro serving

Deuce court

1st serveNowJuan winsv NicolasMatchupOptimal
Wide35%73%78%78.7%±4.848% ▲
Body12%65%69%70.2%±8.50% ▼
T53%76%78%78.7%±4.352% ▼

Optimal v Nicolas Almagro: +1.2±0.7 per 100 first serves (faults included) over the current mix. Serving wide every time would read +1.0 per 100 first serves in before the returner adjusts.

Ad court

1st serveNowJuan winsv NicolasMatchupOptimal
Wide47%78%74%79.5%±4.060% ▲
Body10%64%64%64.3%±10.90% ▼
T43%75%80%81.8%±4.540% ▼

Optimal v Nicolas Almagro: +0.9±0.7 per 100 first serves (faults included) over the current mix. Serving T every time would read +2.9 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.

Nicolas Almagro returning

1st serve to the forehand

ReturnNowTourOwnv JuanValue
FH through the middle51%+4.3−0.1+1.4+5.5±2.2
FH crosscourt34%+5.5−2.7−1.9+0.8±3.6
FH down the line14%+1.7−3.3+1.2−0.4±3.6
FH slice through the middle2%−4.2−0.1+0.6−3.7±1.5

Lean FH through the middle: +2.6±1.7 per 100 returns v the current mix (259 returns charted)

1st serve to the backhand

ReturnNowTourOwnv JuanValue
BH through the middle38%+6.4+1.0−0.2+7.1±2.0
BH crosscourt27%+8.8+0.3−2.0+7.1±2.8
BH down the line16%+4.2−2.2+3.2+5.2±3.9
BH slice through the middle12%−4.2−0.8+1.2−3.7±2.0
BH slice crosscourt4%+0.5−0.8−1.0−1.3±2.2

Lean BH through the middle: +2.5±1.6 per 100 returns v the current mix (341 returns charted)

2nd serve to the backhand

ReturnNowTourOwnv JuanValue
BH through the middle40%−2.9+0.7−0.4−2.6±1.9
BH crosscourt33%+1.0+1.1+0.7+2.8±2.5
BH down the line17%−0.2−0.1+1.2+0.9±4.2
FH inside-out4%+1.0+0.9+1.0+2.9±2.6
FH inside-in4%+0.6+0.4−2.4−1.4±3.4

Lean BH crosscourt: +2.7±2.0 per 100 returns v the current mix (235 returns charted)

Juan Martin Del Potro returning

1st serve to the forehand

ReturnNowTourOwnv NicolasValue
FH through the middle46%+4.3+1.2+1.7+7.2±2.2
FH crosscourt30%+5.5+2.6+2.9+11.0±3.5
FH down the line16%+1.7+2.5−0.5+3.7±3.7
FH slice through the middle4%−4.2−1.1+0.2−5.1±2.1
FH slice down the line2%−4.3−2.4−0.4−7.0±2.6

Lean FH crosscourt: +4.2±2.7 per 100 returns v the current mix (2410 returns charted)

1st serve to the backhand

ReturnNowTourOwnv NicolasValue
BH through the middle30%+6.4+1.9−2.1+6.2±2.0
BH crosscourt25%+8.8+3.2+1.7+13.7±2.8
BH slice through the middle22%−4.2+2.3−0.7−2.6±2.0
BH slice crosscourt12%+0.5+1.1+2.7+4.3±2.5
BH down the line7%+4.2+6.0−2.5+7.7±4.2

Lean BH crosscourt: +8.2±2.3 per 100 returns v the current mix (2945 returns charted)

2nd serve to the forehand

ReturnNowTourOwnv NicolasValue
FH through the middle37%−3.5+0.3+0.4−2.7±2.6
FH crosscourt34%−0.2−2.2+4.8+2.4±4.0
FH down the line18%−1.8+1.4−0.4−0.8±4.6
FH slice through the middle4%−12.7+1.4±0.0−11.2±1.6
FH slice down the line3%−9.4+2.6±0.0−6.8±2.0

Lean FH crosscourt: +3.4±2.9 per 100 returns v the current mix (605 returns charted)

2nd serve to the backhand

ReturnNowTourOwnv NicolasValue
BH crosscourt47%+1.0+0.9+0.3+2.2±2.3
BH through the middle37%−2.9+0.3+1.0−1.6±1.7
BH down the line6%−0.2−0.8+1.2+0.2±4.8
FH through the middle4%−2.9+0.4+0.4−2.1±2.4
FH inside-out2%+1.0+0.4−0.4+0.9±3.7
FH inside-in2%+0.6+3.8+4.8+9.2±4.3

Lean FH inside-in: +8.9±4.5 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 hard. Each player's hard record is shrunk toward their all-surface one, so a thin sample on it moves the numbers only a little.

Nicolas Almagro

Favour

ShotEdgeOwnTheirs
BH to their forehand · serve +1+3.6±5.3+2.9+0.7
FH to their backhand · serve +1+3.4±3.5+2.1+1.4
FH to their forehand · return +1+2.7±4.3+3.0−0.3
BH to their forehand · rally+2.0±4.1+2.4−0.4
FH to their backhand · return +1+1.1±4.2+2.8−1.7
FH to the middle · serve +1+0.9±2.9+0.1+0.8

Avoid

ShotEdgeOwnTheirs
BH to their forehand · return +1−6.1±5.5−5.3−0.9
BH to their forehand · return−3.8±4.8−6.2+2.4
BH to their backhand · return +1−3.3±3.6−0.7−2.6
FH to their backhand · return−3.0±4.5−4.4+1.4
FH to their backhand · rally−2.4±2.6−2.6+0.2

Juan Martin Del Potro

Favour

ShotEdgeOwnTheirs
FH to their forehand · return+6.3±4.9+2.9+3.4
FH to the middle · return+4.9±2.8+1.7+3.2
FH to their forehand · return +1+4.9±4.2+0.2+4.7
FH to their forehand · serve +1+4.0±3.8+1.4+2.6
FH to their backhand · serve +1+3.9±3.4+0.2+3.7
BH to their backhand · rally+3.1±2.2+1.1+2.1

Avoid

ShotEdgeOwnTheirs
BH to their forehand · return +1−3.5±5.6−0.8−2.7
BH slice to the middle · rally−3.2±2.6+1.2−4.4
BH to the middle · return +1−3.1±2.8−0.1−3.0
FH to the middle · serve +1−1.8±2.9−2.3+0.4
BH to their backhand · return +1−1.5±3.6+0.3−1.8

Against Juan Martin Del Potro-like opponents

Nicolas Almagro vMatchesServe pts wonReturn pts won
All charted opponents–60.8%32.1%
Juan Martin Del Potro (charted head-to-head)2 63.8%23.1%

Similar by tactical fingerprint: Stefanos Tsitsipas, Andrey Rublev, Gael Monfils, Miomir Kecmanovic, Borna Coric, David Goffin, Dominic Thiem, Philipp Kohlschreiber, Nikolay Davydenko. When two players have rarely met, their records against these lookalikes fill the gap.

Charted head-to-head