Game plan

Arantxa Sanchez Vicario v Martina Navratilova

Every number combines what Arantxa Sanchez Vicario does well with what Martina Navratilova allows, each measured against the tour average and shrunk toward it when the sample is thin. Flip perspective

Forecast

Arantxa Sanchez Vicario wins, best of 3 20%90%: 5%–50% · best of 5: 15%

Serve points won 51.7% / 58.0% Arantxa / Martina · tour 55.0%

Strengths only, no similarity priors 17%serve 51.6% / 58.6%

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 At least one of them is no longer active or has too little charted in the last three seasons, so both are compared on their careers.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 Arantxa Sanchez Vicario's record against Martina Navratilova's tactical lookalikes and in their charted head-to-heads (lookalikes: +2.0 on serve, +15.1 on return vs expectation (151 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

Career	Arantxa	Martina
Direction choice	−0.06 ±0.14 better than 44%	+0.05 ±0.09 better than 63%
Shot selection	−0.58 ±0.24 better than 9%	+0.74 ±0.23 better than 98%
Execution	+0.06 ±0.46 better than 64%	−0.47 ±0.49 better than 35%
Points left on the table	2.76 ±0.20 lower than 27%	4.11 ±0.23 lower than 0%

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.

Arantxa Sanchez Vicario serving

Deuce court

1st serve	Now	Arantxa wins	v Martina	Matchup	Optimal
Wide	33%	53%	61%	48.3%±6.2	18% ▼
Body	27%	54%	58%	54.7%±8.1	27%
T	40%	56%	67%	55.5%±7.8	55% ▲

Optimal v Martina Navratilova: +0.7±0.9 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving T every time would read +2.6 per 100 first serves in before the returner adjusts.

Ad court

1st serve	Now	Arantxa wins	v Martina	Matchup	Optimal
Wide	61%	53%	57%	44.5%±6.0	45% ▼
Body	17%	51%	62%	57.4%±8.6	17%
T	22%	61%	67%	63.8%±7.8	38% ▲

Optimal v Martina Navratilova: +1.3±1.0 per 100 first serves (faults included) over the current mix. Serving T every time would read +12.7 per 100 first serves in before the returner adjusts.

Martina Navratilova serving

Deuce court

1st serve	Now	Martina wins	v Arantxa	Matchup	Optimal
Wide	38%	65%	68%	66.8%±6.2	38%
Body	15%	61%	57%	60.0%±8.8	0% ▼
T	47%	66%	66%	64.6%±6.3	62% ▲

Optimal v Arantxa Sanchez Vicario: +0.6±1.0 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving wide every time would read +2.0 per 100 first serves in before the returner adjusts.

Ad court

1st serve	Now	Martina wins	v Arantxa	Matchup	Optimal
Wide	59%	64%	68%	66.1%±5.4	74% ▲
Body	12%	58%	64%	66.2%±9.1	0% ▼
T	29%	67%	65%	66.8%±7.6	26% ▼

Optimal v Arantxa Sanchez Vicario: +0.6±0.9 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving T every time would read +0.5 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.

Arantxa Sanchez Vicario returning

1st serve to the forehand

Return	Now	Tour	Own	v Martina	Value
FH through the middle	38%	+4.2	−3.2	−3.2	−2.2±2.5
FH slice through the middle	22%	−6.7	+3.2	+0.9	−2.6±2.5
FH crosscourt	16%	+5.3	−2.6	+3.2	+5.9±4.1
FH down the line	10%	+1.5	+4.2	−1.7	+4.1±4.5
FH slice crosscourt	9%	−6.6	+0.8	+2.4	−3.5±2.7

Lean FH crosscourt: +6.7±3.6 per 100 returns v the current mix (388 returns charted)

1st serve to the backhand

Return	Now	Tour	Own	v Martina	Value
BH through the middle	34%	+6.0	−2.9	−4.4	−1.2±2.4
BH crosscourt	31%	+7.7	−3.9	+3.1	+6.9±3.4
BH slice through the middle	17%	−6.2	+3.0	−2.0	−5.2±2.2
BH slice crosscourt	12%	−4.2	−0.2	+12.4	+8.1±2.9
BH down the line	7%	+2.2	−1.9	−2.3	−2.0±4.4

Lean BH slice crosscourt: +6.5±3.0 per 100 returns v the current mix (478 returns charted)

2nd serve to the forehand

Return	Now	Tour	Own	v Martina	Value
FH through the middle	48%	−3.2	+0.2	+1.0	−2.0±2.8
FH down the line	35%	−0.6	−1.3	+2.0	+0.1±5.1
FH crosscourt	17%	+0.5	−1.4	+2.2	+1.3±4.2

Lean FH crosscourt: +2.0±4.1 per 100 returns v the current mix (164 returns charted, inside the 90% margin)

2nd serve to the backhand

Return	Now	Tour	Own	v Martina	Value
BH crosscourt	51%	+1.5	+0.6	+5.5	+7.5±3.6
BH through the middle	31%	−2.6	±0.0	+1.3	−1.4±2.6
BH down the line	14%	−0.5	±0.0	+0.8	+0.2±5.1
FH inside-in	4%	+0.7	−0.7	+2.2	+2.2±3.8

Lean BH crosscourt: +4.0±2.1 per 100 returns v the current mix (173 returns charted)

Martina Navratilova returning

1st serve to the forehand

Return	Now	Tour	Own	v Arantxa	Value
FH through the middle	42%	+4.2	−2.8	−3.2	−1.8±2.6
FH crosscourt	40%	+5.3	+2.1	−0.1	+7.3±3.7
FH down the line	14%	+1.5	+0.1	+3.3	+5.0±4.5
BH slice through the middle	3%	−4.8	+1.0	+3.0	−0.7±2.0
FH slice through the middle	1%	−6.7	+0.5	+1.8	−4.5±1.9

Lean FH crosscourt: +4.5±2.6 per 100 returns v the current mix (420 returns charted)

1st serve to the backhand

Return	Now	Tour	Own	v Arantxa	Value
BH slice through the middle	43%	−6.2	+7.2	+3.0	+4.0±1.9
BH slice crosscourt	24%	−4.2	+6.2	+3.5	+5.5±2.7
BH slice down the line	13%	−12.5	+8.8	+7.0	+3.4±3.0
BH through the middle	10%	+6.0	−0.9	−2.0	+3.1±2.8
BH crosscourt	4%	+7.7	−2.5	+1.9	+7.2±3.7

Lean BH crosscourt: +2.9±3.7 per 100 returns v the current mix (976 returns charted, inside the 90% margin)

2nd serve to the forehand

Return	Now	Tour	Own	v Arantxa	Value
FH crosscourt	40%	+0.5	+1.6	+1.7	+3.8±4.2
FH down the line	31%	−0.6	−4.6	+3.5	−1.7±5.0
FH through the middle	27%	−3.2	−2.6	−2.0	−7.8±3.1
FH slice down the line	3%	−14.1	+1.3	±0.0	−12.7±1.5

Lean FH crosscourt: +5.2±3.1 per 100 returns v the current mix (193 returns charted)

2nd serve to the backhand

Return	Now	Tour	Own	v Arantxa	Value
BH slice through the middle	35%	−11.7	+5.6	+1.4	−4.7±2.2
BH slice down the line	20%	−10.6	+6.9	+1.9	−1.7±4.4
BH slice crosscourt	15%	−7.5	+2.7	−1.8	−6.6±2.8
BH down the line	6%	−0.5	+3.2	+3.1	+5.8±4.9
FH inside-in	6%	+0.7	+4.2	+1.7	+6.7±4.2

Lean FH inside-in: +8.9±4.1 per 100 returns v the current mix (298 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 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.

Arantxa Sanchez Vicario

Favour

Shot	Edge	Own	Theirs
BH slice to their forehand · rally	+10.8±4.6	+5.9	+4.9
BH slice to their backhand · rally	+6.8±3.5	+3.9	+2.8
BH slice to their backhand · serve +1	+5.6±3.7	+2.2	+3.4
BH to their backhand · return +1	+4.9±4.4	−2.5	+7.4
BH slice to the middle · return	+4.9±3.3	+4.3	+0.6
BH to their forehand · return	+4.8±5.8	−0.3	+5.1

Avoid

Shot	Edge	Own	Theirs
FH to their forehand · serve +1	−7.1±5.2	−6.4	−0.7
FH to their forehand · return	−6.6±5.8	−3.1	−3.5
FH to their forehand · return +1	−5.2±5.1	−3.6	−1.6
BH to the middle · return	−4.9±2.9	−2.5	−2.4
BH to the middle · return +1	−4.6±3.5	−1.0	−3.6

Martina Navratilova

Favour

Shot	Edge	Own	Theirs
BH slice to the middle · return	+15.8±2.7	+10.8	+5.0
BH slice to their backhand · return	+15.0±3.4	+6.8	+8.2
BH slice to the middle · return +1	+10.3±3.2	+5.9	+4.5
BH slice to their forehand · rally	+10.2±3.5	+6.0	+4.3
BH slice to their backhand · return +1	+10.2±3.4	+2.4	+7.7
BH slice to their forehand · return +1	+9.8±4.8	+5.5	+4.2

Avoid

Shot	Edge	Own	Theirs
Smash to their forehand · rally	−9.5±7.7	−6.2	−3.3
BH to their backhand · rally	−5.0±4.4	−5.7	+0.7
FH to the middle · return	−4.0±3.3	−2.4	−1.7
BH to the middle · rally	−3.5±3.1	−1.8	−1.7
FH to the middle · rally	−2.7±2.9	−1.3	−1.4

Against Martina Navratilova-like opponents

Arantxa Sanchez Vicario v	Matches	Serve pts won	Return pts won
All charted opponents	–	50.7%	39.0%
Players most similar to Martina Navratilova	1	52.2%	57.4%

Similar by tactical fingerprint: Karolina Muchova, Taylor Townsend, Barbora Strycova, Kirsten Flipkens, Francesca Schiavone, Roberta Vinci, Amelie Mauresmo, Jana Novotna, Gabriela Sabatini. When two players have rarely met, their records against these lookalikes fill the gap.