RallyIQ

Game plan

Guillermo Vilas v Pedro Martinez

Every number combines what Guillermo Vilas does well with what Pedro Martinez allows, each measured against the tour average and shrunk toward it when the sample is thin. Flip perspective

Forecast

Guillermo Vilas wins, best of 3 52%90%: 15%–88% · best of 5: 53%
Serve points won 61.3% / 60.9% Guillermo / Pedro · tour 65.7%
Strengths only, no similarity priors 52%serve 61.3% / 60.9%

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 At least one of them is no longer active or has too little charted in the last three seasons, so both are compared on their careers.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 Guillermo Vilas's record against Pedro Martinez's tactical lookalikes and in their charted head-to-heads. 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

CareerGuillermoPedro
Direction choice−0.79 ±0.13
better than 0%
−0.06 ±0.08
better than 43%
Shot selection−0.45 ±0.60
better than 13%
−0.06 ±0.23
better than 46%
Execution+0.88 ±1.06
better than 94%
+0.23 ±0.43
better than 77%
Points left on the table4.15 ±0.84
lower than 3%
2.66 ±0.12
lower than 43%

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.

Guillermo Vilas serving

Deuce court

1st serveNowGuillermo winsv PedroMatchupOptimal
Wide22%62%75%64.9%±10.835% ▲
Body13%52%70%59.5%±13.00% ▼
T64%61%76%61.9%±8.365%

Optimal v Pedro Martinez: +0.4±1.0 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving wide every time would read +2.6 per 100 first serves in before the returner adjusts.

Ad court

1st serveNowGuillermo winsv PedroMatchupOptimal
Wide63%63%71%61.6%±8.263%
Body13%66%56%59.4%±13.80% ▼
T24%72%73%73.5%±10.237% ▲

Optimal v Pedro Martinez: +1.0±1.0 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving T every time would read +9.3 per 100 first serves in before the returner adjusts.

Pedro Martinez serving

Deuce court

1st serveNowPedro winsv GuillermoMatchupOptimal
Wide41%65%67%58.7%±9.228% ▼
Body11%59%65%60.9%±12.511%
T48%68%75%67.4%±10.261% ▲

Optimal v Guillermo Vilas: +0.4±0.9 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving T every time would read +4.2 per 100 first serves in before the returner adjusts.

Ad court

1st serveNowPedro winsv GuillermoMatchupOptimal
Wide54%63%76%67.3%±9.967% ▲
Body16%59%71%67.3%±11.512% ▼
T30%62%65%54.5%±10.821% ▼

Optimal v Guillermo Vilas: ±0.0±0.8 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving body every time would read +3.9 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.

Guillermo Vilas returning

1st serve to the forehand

ReturnNowTourOwnv PedroValue
FH through the middle55%+4.3−2.6+1.7+3.4±2.7
FH crosscourt24%+5.5+1.7+1.6+8.9±4.1
FH down the line21%+1.7−3.3+6.1+4.5±4.1

Lean FH crosscourt: +3.9±3.5 per 100 returns v the current mix (84 returns charted)

1st serve to the backhand

ReturnNowTourOwnv PedroValue
BH through the middle41%+6.4+0.7+1.6+8.7±2.4
BH slice through the middle21%−4.2+0.8−1.4−4.8±2.4
BH down the line19%+4.2+0.9+1.7+6.8±3.8
BH crosscourt9%+8.8−1.9+4.4+11.3±3.2
BH slice down the line6%−8.4−0.9−2.2−11.5±2.8

Lean BH through the middle: +4.4±1.7 per 100 returns v the current mix (121 returns charted)

2nd serve to the backhand

ReturnNowTourOwnv PedroValue
BH through the middle45%−2.9−0.1+1.0−2.0±2.4
BH down the line19%−0.2+1.5+1.2+2.5±4.4
BH crosscourt13%+1.0+0.7−0.8+0.9±3.0
FH inside-in12%+0.6+0.1−1.7−1.0±3.9
FH through the middle12%−2.9+0.9+1.2−0.7±2.0

Lean BH down the line: +3.1±3.8 per 100 returns v the current mix (95 returns charted, inside the 90% margin)

Pedro Martinez returning

1st serve to the forehand

ReturnNowTourOwnv GuillermoValue
FH through the middle43%+4.3+2.1−1.7+4.7±2.8
FH crosscourt21%+5.5+1.1+1.3+8.0±4.2
FH slice through the middle13%−4.2+1.7−1.9−4.5±2.0
FH down the line12%+1.7+1.9+4.0+7.6±4.5
FH slice crosscourt8%−4.3+0.6±0.0−3.7±2.0

Lean FH crosscourt: +4.3±3.6 per 100 returns v the current mix (426 returns charted)

1st serve to the backhand

ReturnNowTourOwnv GuillermoValue
BH through the middle41%+6.4+2.2+1.5+10.1±2.6
BH crosscourt27%+8.8−3.4+0.9+6.4±3.2
BH down the line13%+4.2−0.4+1.4+5.2±4.6
BH slice through the middle12%−4.2−1.5+2.2−3.5±2.5
BH slice crosscourt4%+0.5−1.5−0.9−1.9±2.7

Lean BH through the middle: +4.3±1.9 per 100 returns v the current mix (517 returns charted)

2nd serve to the forehand

ReturnNowTourOwnv GuillermoValue
FH through the middle52%−3.5+1.2+0.7−1.5±2.9
FH crosscourt37%−0.2−0.4+1.3+0.6±4.2
FH down the line10%−1.8+0.6−0.7−1.9±4.2

Lean FH crosscourt: +1.4±3.1 per 100 returns v the current mix (107 returns charted, inside the 90% margin)

2nd serve to the backhand

ReturnNowTourOwnv GuillermoValue
BH through the middle41%−2.9−0.2+0.1−3.0±2.4
BH crosscourt30%+1.0±0.0+1.0+2.0±3.1
BH down the line14%−0.2+5.2−3.3+1.7±4.5
FH inside-out7%+1.0−0.7−0.7−0.4±3.6
FH through the middle5%−2.9−0.7+0.7−2.9±2.3

Lean BH crosscourt: +2.5±2.5 per 100 returns v the current mix (340 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.

Guillermo Vilas

Favour

ShotEdgeOwnTheirs
BH to the middle · return+6.9±3.6+1.2+5.7
BH to their backhand · rally+6.4±3.2+3.7+2.7
BH slice to their forehand · rally+5.9±3.4+2.4+3.5
FH to their backhand · rally+3.0±4.5+2.8+0.2
BH to their forehand · rally+3.0±4.7+3.6−0.7
BH slice to the middle · rally+1.6±2.2+2.8−1.2

Avoid

ShotEdgeOwnTheirs
FH to their forehand · rally−1.5±4.8−2.7+1.2
BH slice to their backhand · rally−1.3±2.3−0.4−0.9
FH to the middle · return+0.5±3.7−3.9+4.5
BH to the middle · rally+0.6±2.3+0.1+0.5
FH to the middle · rally+0.7±3.3+0.3+0.4

Pedro Martinez

Favour

ShotEdgeOwnTheirs
BH to their forehand · rally+4.9±3.4+3.9+0.9
BH to the middle · rally+4.8±2.3+2.3+2.5
FH to the middle · rally+4.4±2.7+3.8+0.5
BH to the middle · return+3.8±3.6+1.8+2.0
FH to their forehand · return+3.6±5.9±0.0+3.6
BH to their backhand · rally+2.3±2.9+1.5+0.8

Avoid

ShotEdgeOwnTheirs
FH to the middle · return−0.5±3.4+0.9−1.5
FH to their backhand · rally+0.4±3.4−0.8+1.2
FH to their backhand · return +1+0.7±5.2+0.8−0.2
BH to their backhand · return+1.3±5.1+0.7+0.6
FH to their forehand · rally+1.6±3.9+2.7−1.1

Against Pedro Martinez-like opponents

Guillermo Vilas vMatchesServe pts wonReturn pts won
All charted opponents–56.7%37.4%

Similar by tactical fingerprint: Lorenzo Musetti, Novak Djokovic, Marton Fucsovics, Roberto Bautista Agut, Nuno Borges, Robin Haase, Pablo Andujar, Filip Krajinovic, Philipp Kohlschreiber, Gaston Gaudio. When two players have rarely met, their records against these lookalikes fill the gap.