RallyIQ

Game plan

Jana Novotna v Steffi Graf

Every number combines what Jana Novotna does well with what Steffi Graf allows, each measured against the tour average and shrunk toward it when the sample is thin. Flip perspective

Forecast

Jana Novotna wins, best of 3 31%90%: 10%–62% · best of 5: 27%
Serve points won 59.0% / 62.8% Jana / Steffi · tour 58.1%
Strengths only, no similarity priors 35%serve 59.4% / 62.3%

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 At least one of them is no longer active or has too little charted in the last three seasons, so both are compared on their careers.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 Jana Novotna's record against Steffi Graf's tactical lookalikes and in their charted head-to-heads (head-to-head: −2.2 on serve, −2.3 on return vs expectation (706 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

CareerJanaSteffi
Direction choice+0.23 ±0.18
better than 89%
+0.53 ±0.08
better than 100%
Shot selection−0.64 ±0.34
better than 8%
−0.44 ±0.09
better than 13%
Execution+0.13 ±0.70
better than 67%
−0.43 ±0.23
better than 36%
Points left on the table3.55 ±0.47
lower than 1%
2.61 ±0.12
lower than 52%

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.

Jana Novotna serving

Deuce court

1st serveNowJana winsv SteffiMatchupOptimal
Wide44%65%63%61.8%±7.259% ▲
Body24%54%55%51.0%±9.424%
T32%62%57%50.1%±9.717% ▼

Optimal v Steffi Graf: +0.7±0.9 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving wide every time would read +6.4 per 100 first serves in before the returner adjusts.

Ad court

1st serveNowJana winsv SteffiMatchupOptimal
Wide33%60%58%52.0%±8.133%
Body27%44%52%40.1%±8.911% ▼
T41%70%62%67.7%±7.856% ▲

Optimal v Steffi Graf: +1.7±1.0 per 100 first serves (faults included) over the current mix. Serving T every time would read +12.4 per 100 first serves in before the returner adjusts.

Steffi Graf serving

Deuce court

1st serveNowSteffi winsv JanaMatchupOptimal
Wide50%68%64%66.4%±6.265% ▲
Body14%57%58%57.2%±10.50% ▼
T36%67%67%65.5%±7.335%

Optimal v Jana Novotna: +0.8±0.9 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving wide every time would read +1.6 per 100 first serves in before the returner adjusts.

Ad court

1st serveNowSteffi winsv JanaMatchupOptimal
Wide57%64%60%58.7%±6.655% ▼
Body13%58%55%57.7%±11.10% ▼
T30%67%66%68.8%±7.445% ▲

Optimal v Jana Novotna: +0.6±1.0 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving T every time would read +7.2 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.

Jana Novotna returning

1st serve to the forehand

ReturnNowTourOwnv SteffiValue
FH slice through the middle45%−6.7+5.1+3.9+2.3±2.3
FH through the middle15%+4.2−1.6−3.5−0.9±2.5
FH slice crosscourt14%−6.6+2.8+0.4−3.5±2.8
FH slice down the line14%−10.5+4.2+6.7+0.4±3.3
FH down the line6%+1.5−0.5+1.5+2.5±3.4

Lean FH slice through the middle: +1.4±1.5 per 100 returns v the current mix (222 returns charted, inside the 90% margin)

1st serve to the backhand

ReturnNowTourOwnv SteffiValue
BH slice through the middle49%−6.2+2.4+3.9+0.1±2.0
BH slice crosscourt41%−4.2+6.1+4.4+6.3±2.5
BH slice down the line11%−12.5+3.0+3.7−5.8±3.4

Lean BH slice crosscourt: +4.3±1.8 per 100 returns v the current mix (217 returns charted)

2nd serve to the forehand

ReturnNowTourOwnv SteffiValue
FH crosscourt30%+0.5+1.4+1.9+3.8±3.9
FH down the line22%−0.6−0.5+1.1+0.1±4.1
FH through the middle22%−3.2−0.8−1.8−5.8±2.5
FH slice through the middle12%−15.2+2.2+4.1−8.8±2.3
FH slice crosscourt8%−14.9+2.9+1.1−10.9±1.8

Lean FH crosscourt: +6.3±2.9 per 100 returns v the current mix (92 returns charted)

2nd serve to the backhand

ReturnNowTourOwnv SteffiValue
BH slice crosscourt38%−7.5+0.9+5.0−1.6±2.7
BH slice through the middle34%−11.7+2.1+5.7−3.9±2.3
BH slice down the line15%−10.6+2.4+3.8−4.4±3.8
FH inside-out12%+1.4−3.0+1.1−0.5±2.9

Lean BH slice crosscourt: +1.1±2.0 per 100 returns v the current mix (65 returns charted, inside the 90% margin)

Steffi Graf returning

1st serve to the forehand

ReturnNowTourOwnv JanaValue
FH crosscourt36%+5.3+1.6+1.7+8.6±3.7
FH through the middle30%+4.2−4.4−1.9−2.2±2.7
FH down the line13%+1.5−0.7+0.4+1.2±4.5
FH slice through the middle12%−6.7+2.6+0.6−3.5±2.2
FH slice crosscourt6%−6.6+2.7±0.0−3.9±2.0

Lean FH crosscourt: +6.8±2.6 per 100 returns v the current mix (951 returns charted)

1st serve to the backhand

ReturnNowTourOwnv JanaValue
BH slice crosscourt41%−4.2+7.1+1.6+4.5±2.3
BH slice through the middle32%−6.2+2.5+0.8−3.0±2.0
BH slice down the line13%−12.5+9.4+1.2−1.9±3.0
BH through the middle3%+6.0−5.6−1.1−0.6±2.9
FH inside-out3%+7.0−4.1+0.4+3.3±3.9
FH inside-in2%+9.5+0.8+1.7+12.0±4.1

Lean FH inside-in: +10.9±4.2 per 100 returns v the current mix (2089 returns charted)

2nd serve to the forehand

ReturnNowTourOwnv JanaValue
FH crosscourt45%+0.5+0.8+2.2+3.5±4.2
FH through the middle32%−3.2−6.0−2.7−11.9±3.0
FH down the line23%−0.6+3.6+4.5+7.5±5.2

Lean FH down the line: +8.0±4.5 per 100 returns v the current mix (350 returns charted)

2nd serve to the backhand

ReturnNowTourOwnv JanaValue
BH slice crosscourt27%−7.5+3.0+2.3−2.2±2.4
FH inside-out23%+1.4+0.5+4.5+6.4±3.9
FH inside-in15%+0.7+4.1+2.2+7.1±4.5
BH slice through the middle14%−11.7+2.2−1.5−11.1±2.1
FH through the middle12%−2.7−3.0−2.7−8.4±2.6

Lean FH inside-in: +8.1±4.0 per 100 returns v the current mix (927 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.

Jana Novotna

Favour

ShotEdgeOwnTheirs
BH slice to their backhand · serve +1+18.6±4.2+10.3+8.3
BH slice to their backhand · return +1+14.0±4.0+8.0+6.0
BH slice to their forehand · rally+10.7±4.6+7.9+2.8
FH slice to the middle · return+9.9±3.4+5.6+4.3
BH slice to their backhand · rally+9.2±3.3+5.4+3.8
BH slice to their backhand · return+6.8±4.0+6.5+0.3

Avoid

ShotEdgeOwnTheirs
FH to the middle · return−9.6±4.0−3.2−6.3
FH to their forehand · serve +1−3.3±5.5+0.1−3.4
FH to their backhand · rally−3.2±5.1+1.8−5.0
FH to the middle · rally−2.3±3.5−1.0−1.3
FH to their forehand · return +1−1.6±5.6−0.9−0.6

Steffi Graf

Favour

ShotEdgeOwnTheirs
FH to their forehand · return+9.0±5.6+6.8+2.2
FH to their backhand · return+7.8±5.7+2.4+5.5
BH slice to their backhand · rally+7.0±3.4+3.2+3.8
BH slice to their forehand · rally+3.8±4.4+3.3+0.5
FH to their backhand · rally+3.5±4.9+3.9−0.4
BH to their forehand · rally+0.9±6.3+5.4−4.6

Avoid

ShotEdgeOwnTheirs
FH to their forehand · serve +1−16.0±5.1−6.7−9.2
BH to the middle · rally−13.3±3.6−7.5−5.8
FH to the middle · return−11.3±3.6−6.8−4.5
BH to the middle · return−7.7±4.3−6.5−1.3
BH to their backhand · serve +1−6.5±5.5−4.6−2.0

Against Steffi Graf-like opponents

Jana Novotna vMatchesServe pts wonReturn pts won
All charted opponents–55.3%41.5%
Steffi Graf (charted head-to-head)5 53.0%37.6%

Similar by tactical fingerprint: Diane Parry, Daria Saville, Kirsten Flipkens, Ashleigh Barty, Svetlana Kuznetsova, Francesca Schiavone, Roberta Vinci, Amelie Mauresmo, Conchita Martinez, Gabriela Sabatini. When two players have rarely met, their records against these lookalikes fill the gap.

Charted head-to-head