RallyIQ

Game plan

John Mcenroe v Stefan Edberg

Every number combines what John Mcenroe does well with what Stefan Edberg allows, each measured against the tour average and shrunk toward it when the sample is thin. Flip perspective

Forecast

John Mcenroe wins, best of 3 30%90%: 21%–41% · best of 5: 26%
Serve points won 61.2% / 65.4% John / Stefan · tour 63.8%
Strengths only, no similarity priors 31%serve 60.9% / 64.8%

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 At least one of them is no longer active or has too little charted in the last three seasons, so both are compared on their careers.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 John Mcenroe's record against Stefan Edberg's tactical lookalikes and in their charted head-to-heads (lookalikes: +1.5 on serve, +2.4 on return vs expectation (1316 points); head-to-head: −0.9 on serve, −8.2 on return vs expectation (529 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

CareerJohnStefan
Direction choice−0.26 ±0.08
better than 9%
+0.16 ±0.05
better than 89%
Shot selection+0.77 ±0.17
better than 98%
+0.79 ±0.06
better than 98%
Execution−0.45 ±0.30
better than 46%
−0.62 ±0.21
better than 40%
Points left on the table4.83 ±0.17
lower than 1%
3.93 ±0.11
lower than 5%

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.

John Mcenroe serving

Deuce court

1st serveNowJohn winsv StefanMatchupOptimal
Wide43%75%69%71.3%±3.130% ▼
Body17%64%62%62.6%±4.819% ▲
T40%69%74%68.2%±3.151% ▲

Optimal v Stefan Edberg: +0.2±0.4 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving wide every time would read +2.7 per 100 first serves in before the returner adjusts.

Ad court

1st serveNowJohn winsv StefanMatchupOptimal
Wide52%74%69%70.1%±2.865% ▲
Body10%64%63%63.9%±5.80% ▼
T38%78%70%76.8%±3.235% ▼

Optimal v Stefan Edberg: +0.4±0.5 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving T every time would read +4.8 per 100 first serves in before the returner adjusts.

Stefan Edberg serving

Deuce court

1st serveNowStefan winsv JohnMatchupOptimal
Wide42%75%70%72.5%±2.742%
Body20%69%63%67.9%±5.233% ▲
T38%72%72%68.9%±3.225% ▼

Optimal v John Mcenroe: +0.3±0.5 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving wide every time would read +2.3 per 100 first serves in before the returner adjusts.

Ad court

1st serveNowStefan winsv JohnMatchupOptimal
Wide55%72%69%68.3%±3.242% ▼
Body15%65%65%66.5%±4.915%
T30%70%72%70.8%±3.143% ▲

Optimal v John Mcenroe: +0.3±0.4 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving T every time would read +2.0 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.

John Mcenroe returning

1st serve to the forehand

ReturnNowTourOwnv StefanValue
FH through the middle47%+4.3+1.6−2.2+3.6±1.4
FH crosscourt26%+5.5+5.7+3.0+14.2±2.6
FH down the line20%+1.7+0.9+0.5+3.1±2.9
FH slice through the middle2%−4.2+2.4−0.2−2.0±2.3
BH through the middle1%+6.6+1.4−4.0+4.0±1.7

Lean FH crosscourt: +8.1±2.1 per 100 returns v the current mix (1163 returns charted)

1st serve to the backhand

ReturnNowTourOwnv StefanValue
BH through the middle36%+6.4−2.3−4.0+0.2±1.2
BH down the line25%+4.2+0.4+1.4+6.0±2.3
BH slice through the middle16%−4.2+3.1−1.4−2.5±1.6
BH crosscourt9%+8.8±0.0−1.5+7.2±2.4
BH slice down the line9%−8.4+5.1+0.9−2.3±2.6

Lean BH crosscourt: +5.3±2.3 per 100 returns v the current mix (1830 returns charted)

2nd serve to the forehand

ReturnNowTourOwnv StefanValue
FH crosscourt37%−0.2+2.2+4.0+6.0±3.3
FH through the middle36%−3.5−0.4−2.4−6.3±2.1
FH down the line24%−1.8+1.3+4.0+3.5±3.8
FH slice down the line2%−9.4−1.1−0.1−10.6±2.2
FH slice through the middle2%−12.7+1.5+0.7−10.5±1.7

Lean FH crosscourt: +5.6±2.4 per 100 returns v the current mix (369 returns charted)

2nd serve to the backhand

ReturnNowTourOwnv StefanValue
BH through the middle32%−2.9+2.3−3.0−3.5±1.4
BH down the line22%−0.2+3.5+3.7+7.0±3.0
BH crosscourt18%+1.0+2.8−1.3+2.4±2.2
BH slice through the middle8%−11.3+3.9+1.3−6.1±2.2
FH through the middle6%−2.9+2.6−2.4−2.7±1.9
FH inside-out3%+1.0+5.3+4.0+10.3±3.0

Lean FH inside-out: +9.6±3.1 per 100 returns v the current mix (1151 returns charted)

Stefan Edberg returning

1st serve to the forehand

ReturnNowTourOwnv JohnValue
FH through the middle45%+4.3+0.4−4.0+0.6±1.4
FH down the line31%+1.7+5.4−2.2+4.9±2.5
FH crosscourt20%+5.5+2.6+5.4+13.5±2.8
BH slice through the middle1%−1.6+0.8−3.4−4.2±2.0
FH slice through the middle1%−4.2−0.5−0.5−5.2±2.2

Lean FH crosscourt: +9.0±2.4 per 100 returns v the current mix (3660 returns charted)

1st serve to the backhand

ReturnNowTourOwnv JohnValue
BH slice through the middle32%−4.2+1.2−3.4−6.4±1.4
BH slice crosscourt25%+0.5+5.2+5.5+11.3±2.1
BH through the middle14%+6.4−1.4−4.5+0.6±1.5
BH slice down the line11%−8.4+5.0−1.3−4.7±2.7
BH crosscourt9%+8.8+1.1+3.6+13.5±2.3

Lean BH crosscourt: +11.6±2.3 per 100 returns v the current mix (4178 returns charted)

2nd serve to the forehand

ReturnNowTourOwnv JohnValue
FH down the line34%−1.8+5.6+0.9+4.7±3.1
FH through the middle32%−3.5−0.4−1.3−5.2±1.8
FH crosscourt28%−0.2+2.2+2.6+4.6±3.1
BH slice through the middle2%−6.9+1.3−1.1−6.7±2.1
BH slice inside-in2%−2.1+0.2−1.4−3.3±2.8

Lean FH down the line: +3.8±2.3 per 100 returns v the current mix (1191 returns charted)

2nd serve to the backhand

ReturnNowTourOwnv JohnValue
BH slice crosscourt29%−4.0+2.5−1.4−3.0±2.0
BH through the middle17%−2.9−0.4+0.1−3.1±1.4
BH crosscourt13%+1.0−0.8+1.8+2.0±2.1
BH slice through the middle12%−11.3+2.8−1.1−9.6±2.0
BH slice down the line12%−9.3+4.3−0.8−5.8±3.5
FH inside-in2%+0.6+2.6+2.6+5.8±3.8

Lean FH inside-in: +8.1±3.8 per 100 returns v the current mix (2884 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.

John Mcenroe

Favour

ShotEdgeOwnTheirs
FH to their backhand · return+11.6±2.4+7.4+4.2
BH volley to their forehand · rally+10.3±6.1+10.0+0.3
BH volley to their backhand · rally+8.3±6.0+1.0+7.3
BH slice to their forehand · return+6.4±4.1+3.6+2.8
FH slice to the middle · return+5.6±3.5+5.4+0.2
BH slice to their forehand · return +1+5.2±4.1+5.3−0.1

Avoid

ShotEdgeOwnTheirs
Smash to the middle · rally−18.4±7.2−11.3−7.1
FH volley to their forehand · serve +1−9.3±4.0−6.4−3.0
FH to the middle · return +1−8.3±2.9−2.3−6.0
Smash to their forehand · rally−8.0±5.1−3.6−4.4
BH to the middle · return +1−7.4±2.4−2.8−4.6

Stefan Edberg

Favour

ShotEdgeOwnTheirs
BH volley to their forehand · rally+11.5±6.0+2.5+9.0
BH lob to their backhand · return +1+11.0±5.4+4.9+6.0
FH to their backhand · return +1+10.4±3.1+1.8+8.6
BH slice to their forehand · return+10.0±3.0+7.1+2.9
BH volley to their forehand · serve +1+9.9±4.5+6.4+3.5
FH to their backhand · return+9.4±2.5+4.3+5.1

Avoid

ShotEdgeOwnTheirs
BH to the middle · return +1−10.2±2.6−4.3−5.8
Smash to their backhand · rally−9.9±5.6−6.6−3.3
FH volley to the middle · rally−9.4±7.4−5.7−3.8
Smash to their forehand · rally−6.6±4.9−1.0−5.6
BH volley to the middle · rally−6.1±6.6−0.1−6.0

Against Stefan Edberg-like opponents

John Mcenroe vMatchesServe pts wonReturn pts won
All charted opponents–63.6%35.9%
Players most similar to Stefan Edberg5 64.9%37.8%
Stefan Edberg (charted head-to-head)3 62.1%27.7%

Similar by tactical fingerprint: Tim Henman, Max Mirnyi, Greg Rusedski, Mark Philippoussis, Patrick Rafter, Boris Becker, Michael Stich, David Wheaton, Pat Cash. When two players have rarely met, their records against these lookalikes fill the gap.

Charted head-to-head