RallyIQ

Game plan

Angelique Kerber v Magdalena Frech

Every number combines what Angelique Kerber does well with what Magdalena Frech allows, each measured against the tour average and shrunk toward it when the sample is thin. Flip perspective

Forecast

Angelique Kerber wins, best of 3 53%90%: 30%–75% · best of 5: 53%
Serve points won 55.8% / 55.3% Angelique / Magdalena · tour 56.4%
Strengths only, no similarity priors 62%serve 57.4% / 55.1%

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 At least one of them is no longer active or has too little charted in the last three seasons, so both are compared on their careers.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 Angelique Kerber's record against Magdalena Frech's tactical lookalikes and in their charted head-to-heads (lookalikes: −2.8 on serve, −1.2 on return vs expectation (2302 points); head-to-head: −7.2 on serve, +3.9 on return vs expectation (202 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

CareerAngeliqueMagdalena
Direction choice+0.18 ±0.05
better than 83%
+0.14 ±0.09
better than 78%
Shot selection+0.05 ±0.08
better than 50%
−0.42 ±0.11
better than 15%
Execution+1.65 ±0.29
better than 97%
+1.36 ±0.49
better than 96%
Points left on the table2.57 ±0.07
lower than 56%
2.39 ±0.15
lower than 78%

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.

Structural compatibility

Expected edge per 100 rally shots from style alone: Angelique Kerber +3.17, Magdalena Frech +3.12. Each player's shot mix weighted by their own skill with each shot and by how much the other gives up against it. This is why some rankings gaps don't hold in a given matchup.

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.

Angelique Kerber serving

Deuce court

1st serveNowAngelique winsv MagdalenaMatchupOptimal
Wide36%65%68%67.3%±6.051% ▲
Body27%56%57%55.5%±7.312% ▼
T37%59%71%62.9%±6.937%

Optimal v Magdalena Frech: +0.8±0.9 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving wide every time would read +4.8 per 100 first serves in before the returner adjusts.

Ad court

1st serveNowAngelique winsv MagdalenaMatchupOptimal
Wide62%62%66%62.7%±5.963%
Body19%54%61%58.5%±7.84% ▼
T18%71%68%73.9%±6.633% ▲

Optimal v Magdalena Frech: +1.2±1.0 per 100 first serves (faults included) over the current mix. Serving T every time would read +10.0 per 100 first serves in before the returner adjusts.

Magdalena Frech serving

Deuce court

1st serveNowMagdalena winsv AngeliqueMatchupOptimal
Wide37%62%69%64.9%±5.852% ▲
Body12%59%59%60.9%±9.20% ▼
T51%63%63%58.0%±6.148% ▼

Optimal v Angelique Kerber: +0.2±0.9 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.

Ad court

1st serveNowMagdalena winsv AngeliqueMatchupOptimal
Wide47%66%67%68.1%±6.062% ▲
Body13%48%58%49.4%±9.313%
T40%56%60%51.0%±6.425% ▼

Optimal v Angelique Kerber: +0.9±0.8 per 100 first serves (faults included) over the current mix. Serving wide every time would read +9.2 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.

Angelique Kerber returning

1st serve to the forehand

ReturnNowTourOwnv MagdalenaValue
FH through the middle53%+4.2+2.6+2.3+9.0±2.2
FH crosscourt34%+5.3+5.1+0.5+11.0±3.7
FH down the line11%+1.5+5.5+2.0+9.0±4.5
FH slice through the middle1%−6.7−0.1+1.2−5.6±2.2
BH through the middle1%+5.2+1.3+0.6+7.2±2.1

Lean FH crosscourt: +1.5±2.7 per 100 returns v the current mix (1007 returns charted, inside the 90% margin)

1st serve to the backhand

ReturnNowTourOwnv MagdalenaValue
BH through the middle48%+6.0+1.1+0.6+7.8±2.0
BH crosscourt30%+7.7−0.4−0.9+6.5±3.0
BH down the line12%+2.2+7.3+1.5+11.0±4.2
BH slice through the middle5%−6.2−0.7−0.4−7.4±2.5
BH slice crosscourt2%−4.2−0.4±0.0−4.6±2.1

Lean BH down the line: +4.5±3.9 per 100 returns v the current mix (1499 returns charted)

2nd serve to the forehand

ReturnNowTourOwnv MagdalenaValue
FH crosscourt39%+0.5−1.4−0.4−1.3±4.3
FH down the line32%−0.6+1.3+0.9+1.6±5.0
FH through the middle28%−3.2+0.3−1.7−4.6±2.9

Lean FH down the line: +2.9±3.9 per 100 returns v the current mix (285 returns charted, inside the 90% margin)

2nd serve to the backhand

ReturnNowTourOwnv MagdalenaValue
BH crosscourt39%+1.5+2.8+1.3+5.5±3.2
BH through the middle37%−2.6+1.3+0.9−0.5±2.4
BH down the line20%−0.5+4.0−2.7+0.7±5.0
FH inside-in1%+0.7−0.9−0.4−0.6±4.1
FH through the middle1%−2.7+1.2−1.7−3.3±2.2

Lean BH crosscourt: +3.4±2.4 per 100 returns v the current mix (646 returns charted)

Magdalena Frech returning

1st serve to the forehand

ReturnNowTourOwnv AngeliqueValue
FH through the middle39%+4.2+2.5+1.1+7.7±2.3
FH slice through the middle25%−6.7+1.5−1.0−6.3±2.5
FH down the line16%+1.5−0.6−0.6+0.3±4.2
FH crosscourt14%+5.3+0.1+3.8+9.2±3.8
FH slice down the line4%−10.5+1.5−2.2−11.2±2.8

Lean FH crosscourt: +6.9±3.5 per 100 returns v the current mix (317 returns charted)

1st serve to the backhand

ReturnNowTourOwnv AngeliqueValue
BH through the middle41%+6.0+2.1+1.3+9.4±2.1
BH crosscourt27%+7.7+1.5+6.5+15.8±2.9
BH slice through the middle13%−6.2+1.2+0.6−4.4±2.5
BH down the line8%+2.2+2.1−1.7+2.6±3.8
BH slice crosscourt8%−4.2−0.9+2.1−3.0±3.0

Lean BH crosscourt: +8.6±2.4 per 100 returns v the current mix (300 returns charted)

2nd serve to the forehand

ReturnNowTourOwnv AngeliqueValue
FH through the middle49%−3.2+1.1+2.0−0.1±2.9
FH crosscourt26%+0.5+0.1+2.0+2.6±4.1
FH down the line25%−0.6+1.8+2.4+3.6±4.8

Lean FH down the line: +2.1±4.0 per 100 returns v the current mix (68 returns charted, inside the 90% margin)

2nd serve to the backhand

ReturnNowTourOwnv AngeliqueValue
BH crosscourt37%+1.5+1.2+3.7+6.4±3.1
BH down the line34%−0.5+3.5+0.4+3.4±4.6
BH through the middle29%−2.6+1.5−0.1−1.2±2.3

Lean BH crosscourt: +3.2±2.6 per 100 returns v the current mix (139 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.

Angelique Kerber

Favour

ShotEdgeOwnTheirs
FH to their backhand · return +1+7.1±4.6+3.7+3.4
BH to the middle · return +1+6.8±2.8+2.2+4.6
BH to their forehand · return +1+6.4±5.6+2.8+3.6
FH to their backhand · rally+6.1±2.7+3.1+3.0
FH to the middle · return +1+5.6±3.3+2.2+3.4
BH to their backhand · serve +1+5.3±4.1+3.0+2.4

Avoid

ShotEdgeOwnTheirs
BH slice to their backhand · rally−6.1±3.8−3.0−3.1
FH to their forehand · serve +1−3.1±3.7−0.9−2.2
FH to the middle · rally+0.1±2.2+0.1−0.1
FH to their forehand · return +1+0.1±4.4−1.5+1.6
BH to their backhand · return +1+0.8±4.2−2.9+3.7

Magdalena Frech

Favour

ShotEdgeOwnTheirs
FH to their backhand · return+9.8±5.3+4.7+5.2
BH to their forehand · return+9.7±4.6+3.2+6.5
BH slice to their forehand · rally+8.3±4.6+2.8+5.5
FH to their forehand · serve +1+6.9±4.1+1.0+5.9
BH to their forehand · serve +1+6.0±5.1+0.9+5.1
BH to their forehand · return +1+5.7±5.5+1.8+3.8

Avoid

ShotEdgeOwnTheirs
BH to their backhand · return +1−2.2±4.2+0.4−2.6
BH to their backhand · return−2.1±3.7−0.3−1.8
FH to their forehand · return−0.9±5.4−3.6+2.6
BH slice to their backhand · rally−0.1±3.5+1.0−1.1
BH to the middle · return +1+0.7±3.1+0.6+0.1

Against Magdalena Frech-like opponents

Angelique Kerber vMatchesServe pts wonReturn pts won
All charted opponents–56.1%42.6%
Players most similar to Magdalena Frech15 52.9%42.2%
Magdalena Frech (charted head-to-head)1 51.1%49.1%

Similar by tactical fingerprint: Elina Svitolina, Daria Kasatkina, Jaqueline Cristian, Victoria Azarenka, Linda Fruhvirtova, Caroline Wozniacki, Vera Zvonareva, Agnieszka Radwanska, Flavia Pennetta, Dinara Safina. When two players have rarely met, their records against these lookalikes fill the gap.

Charted head-to-head