Game plan

Maria Sakkari v Justine Henin

Every number combines what Maria Sakkari does well with what Justine Henin allows, each measured against the tour average and shrunk toward it when the sample is thin. Flip perspective

Forecast

Maria Sakkari wins, best of 3 37%90%: 11%–70% · best of 5: 33%

Serve points won 56.4% / 59.0% Maria / Justine · tour 58.1%

Strengths only, no similarity priors 31%serve 56.3% / 60.2%

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 At least one of them is no longer active or has too little charted in the last three seasons, so both are compared on their careers.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 Maria Sakkari's record against Justine Henin's tactical lookalikes and in their charted head-to-heads (lookalikes: +0.7 on serve, +7.0 on return vs expectation (590 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	Maria	Justine
Direction choice	+0.01 ±0.06 better than 54%	±0.00 ±0.06 better than 53%
Shot selection	+0.36 ±0.08 better than 85%	−0.24 ±0.13 better than 25%
Execution	−0.34 ±0.33 better than 42%	−0.17 ±0.28 better than 54%
Points left on the table	2.52 ±0.08 lower than 63%	2.89 ±0.11 lower than 16%

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.

Maria Sakkari serving

Deuce court

1st serve	Now	Maria wins	v Justine	Matchup	Optimal
Wide	41%	64%	62%	59.6%±4.4	26% ▼
Body	16%	59%	55%	57.5%±7.2	17%
T	42%	73%	65%	69.8%±4.7	57% ▲

Optimal v Justine Henin: +0.5±0.7 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving T every time would read +6.2 per 100 first serves in before the returner adjusts.

Ad court

1st serve	Now	Maria wins	v Justine	Matchup	Optimal
Wide	37%	62%	57%	52.4%±5.1	23% ▼
Body	15%	61%	53%	58.0%±7.3	14% ▼
T	48%	69%	60%	65.0%±4.6	63% ▲

Optimal v Justine Henin: +0.6±0.7 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving T every time would read +5.7 per 100 first serves in before the returner adjusts.

Justine Henin serving

Deuce court

1st serve	Now	Justine wins	v Maria	Matchup	Optimal
Wide	44%	70%	63%	66.4%±4.5	50% ▲
Body	11%	62%	57%	61.4%±7.2	0% ▼
T	45%	69%	69%	70.1%±4.7	50% ▲

Optimal v Maria Sakkari: +0.4±0.6 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	Justine wins	v Maria	Matchup	Optimal
Wide	17%	68%	66%	68.4%±6.4	32% ▲
Body	11%	61%	57%	61.8%±7.7	0% ▼
T	72%	67%	67%	69.8%±4.1	68% ▼

Optimal v Maria Sakkari: +0.6±0.8 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving T every time would read +1.1 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.

Maria Sakkari returning

1st serve to the forehand

Return	Now	Tour	Own	v Justine	Value
FH through the middle	44%	+4.2	−0.2	−1.7	+2.3±1.8
FH crosscourt	20%	+5.3	−3.5	−0.7	+1.2±3.4
FH down the line	14%	+1.5	+1.9	−0.3	+3.1±3.8
FH slice through the middle	12%	−6.7	−1.9	+0.3	−8.4±2.4
FH slice crosscourt	7%	−6.6	−2.2	+0.9	−7.9±2.8

Lean FH down the line: +3.1±3.5 per 100 returns v the current mix (1015 returns charted, inside the 90% margin)

1st serve to the backhand

Return	Now	Tour	Own	v Justine	Value
BH through the middle	48%	+6.0	+0.1	−1.2	+5.0±1.9
BH crosscourt	36%	+7.7	−1.4	−1.4	+4.9±2.9
BH down the line	10%	+2.2	−4.6	−0.2	−2.6±4.4
BH slice through the middle	4%	−6.2	−3.6	+1.8	−8.0±2.5
BH slice crosscourt	3%	−4.2	−3.6	−1.7	−9.4±2.9

Lean BH through the middle: +1.8±1.5 per 100 returns v the current mix (954 returns charted)

2nd serve to the forehand

Return	Now	Tour	Own	v Justine	Value
FH through the middle	58%	−3.2	−3.7	+1.6	−5.3±2.5
FH crosscourt	32%	+0.5	−1.9	−3.8	−5.2±4.2
FH down the line	10%	−0.6	−1.1	−6.0	−7.7±5.0

Lean FH crosscourt: +0.3±3.3 per 100 returns v the current mix (250 returns charted, inside the 90% margin)

2nd serve to the backhand

Return	Now	Tour	Own	v Justine	Value
BH crosscourt	40%	+1.5	−0.7	−1.5	−0.7±2.7
BH through the middle	38%	−2.6	−1.1	−0.3	−3.9±2.0
BH down the line	14%	−0.5	+0.5	−3.7	−3.8±4.8
FH through the middle	5%	−2.7	−1.9	+1.6	−3.0±2.3
FH inside-in	2%	+0.7	±0.0	−3.8	−3.1±3.8

Lean BH crosscourt: +1.9±1.9 per 100 returns v the current mix (509 returns charted, inside the 90% margin)

Justine Henin returning

1st serve to the forehand

Return	Now	Tour	Own	v Maria	Value
FH through the middle	38%	+4.2	−0.3	−1.1	+2.7±1.8
FH down the line	22%	+1.5	+2.3	−1.8	+2.1±3.6
FH crosscourt	16%	+5.3	−3.8	−3.5	−2.0±3.5
FH slice through the middle	15%	−6.7	+1.4	−0.6	−5.8±2.3
FH slice crosscourt	5%	−6.6	+1.8	−0.9	−5.7±2.8

Lean FH through the middle: +2.9±1.5 per 100 returns v the current mix (1092 returns charted)

1st serve to the backhand

Return	Now	Tour	Own	v Maria	Value
BH through the middle	32%	+6.0	−1.1	−1.4	+3.5±1.9
BH slice through the middle	26%	−6.2	+0.7	−0.4	−5.9±2.3
BH crosscourt	13%	+7.7	−1.4	+2.1	+8.4±3.0
BH down the line	12%	+2.2	+1.3	−0.2	+3.3±4.1
BH slice crosscourt	11%	−4.2	+4.1	−0.5	−0.5±3.0

Lean BH crosscourt: +7.9±2.8 per 100 returns v the current mix (798 returns charted)

2nd serve to the forehand

Return	Now	Tour	Own	v Maria	Value
FH through the middle	42%	−3.2	±0.0	−0.1	−3.3±2.5
FH crosscourt	35%	+0.5	−4.2	−1.0	−4.6±3.8
FH down the line	18%	−0.6	+0.2	+1.4	+1.0±5.1
FH slice through the middle	3%	−15.2	+0.2	±0.0	−15.0±1.9
FH slice crosscourt	2%	−14.9	+0.9	±0.0	−14.0±1.3

Lean FH down the line: +4.4±4.6 per 100 returns v the current mix (399 returns charted, inside the 90% margin)

2nd serve to the backhand

Return	Now	Tour	Own	v Maria	Value
BH through the middle	38%	−2.6	−1.4	+0.1	−3.9±2.0
BH crosscourt	27%	+1.5	−1.4	+0.6	+0.8±2.9
BH down the line	15%	−0.5	−0.7	+0.4	−0.8±4.7
FH inside-in	5%	+0.7	+0.6	−1.0	+0.3±4.2
BH slice through the middle	5%	−11.7	−2.3	−1.3	−15.2±2.1

Lean BH crosscourt: +3.2±2.4 per 100 returns v the current mix (460 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.

Maria Sakkari

Favour

Shot	Edge	Own	Theirs
FH to the middle · return +1	+2.6±3.4	+0.4	+2.3
FH to their backhand · serve +1	−0.6±5.2	±0.0	−0.6
BH to their forehand · serve +1	−0.6±5.6	+0.3	−0.9
BH to the middle · rally	−0.8±3.0	+0.9	−1.8
FH slice to the middle · rally	−0.9±2.7	−1.8	+0.9
FH to the middle · rally	−1.0±3.2	+1.1	−2.1

Avoid

Shot	Edge	Own	Theirs
FH to their backhand · return +1	−8.4±5.3	−5.2	−3.2
BH slice to the middle · rally	−7.5±3.2	−3.9	−3.6
BH to their forehand · return	−6.7±5.5	−1.5	−5.2
BH to their forehand · rally	−6.1±5.2	+0.4	−6.4
BH to the middle · return	−5.5±3.3	−3.7	−1.8

Justine Henin

Favour

Shot	Edge	Own	Theirs
FH volley to their forehand · rally	+2.8±6.9	+4.2	−1.4
BH to their backhand · return	+2.5±4.5	−0.7	+3.2
BH to their backhand · serve +1	+2.4±4.6	−0.4	+2.8
BH to their forehand · serve +1	+1.9±5.9	−0.5	+2.4
FH to the middle · return	+1.8±3.5	+2.1	−0.2
FH to the middle · serve +1	+1.7±3.4	+1.6	+0.1

Avoid

Shot	Edge	Own	Theirs
FH to their forehand · return	−11.3±5.4	−7.1	−4.2
BH to their forehand · rally	−9.7±5.6	−5.6	−4.2
FH to their backhand · rally	−8.1±4.9	−5.8	−2.3
FH to their forehand · return +1	−5.8±4.8	−0.4	−5.4
BH slice to their backhand · return +1	−3.7±3.9	−2.7	−0.9

Against Justine Henin-like opponents

Maria Sakkari v	Matches	Serve pts won	Return pts won
All charted opponents	–	57.7%	41.6%
Players most similar to Justine Henin	4	57.9%	50.0%

Similar by tactical fingerprint: Jessica Pegula, Anna Bondar, Paula Badosa, Katerina Siniakova, Heather Watson, Qiang Wang, Jennifer Brady, Alison Van Uytvanck, Anastasia Myskina. When two players have rarely met, their records against these lookalikes fill the gap.