RallyIQ

Game plan

Lleyton Hewitt v Michael Chang

Every number combines what Lleyton Hewitt does well with what Michael Chang allows, each measured against the tour average and shrunk toward it when the sample is thin. Flip perspective

Forecast

Lleyton Hewitt wins, best of 3 94%90%: 79%–99% · best of 5: 97%
Serve points won 66.0% / 54.0% Lleyton / Michael · tour 65.7%
Strengths only, no similarity priors 95%serve 66.1% / 53.2%

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 At least one of them is no longer active or has too little charted in the last three seasons, so both are compared on their careers.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 Lleyton Hewitt's record against Michael Chang's tactical lookalikes and in their charted head-to-heads (lookalikes: −0.2 on serve, −1.1 on return vs expectation (6252 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

CareerLleytonMichael
Direction choice+0.49 ±0.04
better than 100%
−0.01 ±0.13
better than 54%
Shot selection−0.09 ±0.09
better than 41%
−0.02 ±0.19
better than 49%
Execution+0.77 ±0.16
better than 91%
+1.06 ±0.36
better than 96%
Points left on the table1.79 ±0.06
lower than 100%
2.88 ±0.27
lower than 26%

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.

Lleyton Hewitt serving

Deuce court

1st serveNowLleyton winsv MichaelMatchupOptimal
Wide50%73%75%74.8%±3.540% ▼
Body3%68%59%64.7%±8.30% ▼
T47%80%79%83.6%±3.160% ▲

Optimal v Michael Chang: +0.4±0.5 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving T every time would read +5.0 per 100 first serves in before the returner adjusts.

Ad court

1st serveNowLleyton winsv MichaelMatchupOptimal
Wide51%74%67%68.4%±3.942% ▼
Body4%60%62%59.6%±9.10% ▼
T45%70%74%72.6%±4.258% ▲

Optimal v Michael Chang: +0.7±0.5 per 100 first serves (faults included) over the current mix. Serving T every time would read +2.7 per 100 first serves in before the returner adjusts.

Michael Chang serving

Deuce court

1st serveNowMichael winsv LleytonMatchupOptimal
Wide41%65%69%60.9%±4.037% ▼
Body8%56%56%48.2%±8.40% ▼
T50%69%75%68.9%±3.963% ▲

Optimal v Lleyton Hewitt: +0.6±0.5 per 100 first serves (faults included) over the current mix. Serving T every time would read +5.0 per 100 first serves in before the returner adjusts.

Ad court

1st serveNowMichael winsv LleytonMatchupOptimal
Wide48%65%68%60.5%±3.949%
Body7%59%63%58.8%±9.220% ▲
T44%63%70%61.6%±4.431% ▼

Optimal v Lleyton Hewitt: +0.2±0.8 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving T every time would read +0.7 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.

Lleyton Hewitt returning

1st serve to the forehand

ReturnNowTourOwnv MichaelValue
FH through the middle31%+4.3+1.5+1.2+7.0±1.7
FH crosscourt25%+5.5+1.0+4.4+10.9±2.9
FH down the line18%+1.7+4.1+2.7+8.6±3.1
FH slice through the middle12%−4.2+1.4+2.7−0.1±2.0
FH slice crosscourt9%−4.3+1.3+1.8−1.2±2.0

Lean FH crosscourt: +4.6±2.3 per 100 returns v the current mix (2677 returns charted)

1st serve to the backhand

ReturnNowTourOwnv MichaelValue
BH crosscourt35%+8.8+2.5+2.4+13.6±2.4
BH through the middle30%+6.4+2.1−0.1+8.4±1.9
BH slice through the middle13%−4.2−0.1+5.0+0.7±1.8
BH down the line9%+4.2+4.5+2.0+10.7±4.1
BH slice crosscourt8%+0.5−2.1+5.7+4.1±2.3

Lean BH crosscourt: +5.1±1.7 per 100 returns v the current mix (2761 returns charted)

2nd serve to the forehand

ReturnNowTourOwnv MichaelValue
FH through the middle34%−3.5+1.8+2.5+0.9±2.1
FH crosscourt34%−0.2−0.2+1.6+1.2±3.2
FH down the line28%−1.8+0.9+2.4+1.5±3.4
FH slice through the middle2%−12.7±0.0+1.7−10.9±1.9
BH inside-in1%+2.5+0.6+0.4+3.5±2.6

Lean FH down the line: +0.6±2.8 per 100 returns v the current mix (872 returns charted, inside the 90% margin)

2nd serve to the backhand

ReturnNowTourOwnv MichaelValue
BH crosscourt51%+1.0+1.4+0.4+2.8±2.1
BH through the middle25%−2.9+1.9+2.2+1.2±1.9
BH down the line10%−0.2−0.8+0.4−0.6±4.4
FH inside-out6%+1.0+1.0+2.4+4.3±3.0
FH inside-in4%+0.6+4.2+1.6+6.3±3.7

Lean FH inside-in: +4.2±3.8 per 100 returns v the current mix (2503 returns charted)

Michael Chang returning

1st serve to the forehand

ReturnNowTourOwnv LleytonValue
FH through the middle53%+4.3+1.7+1.2+7.2±1.7
FH down the line29%+1.7+2.6−0.8+3.5±3.1
FH crosscourt17%+5.5−2.6−1.4+1.5±3.3
BH through the middle1%+6.6+0.4−1.1+5.9±1.7

Lean FH through the middle: +2.1±1.3 per 100 returns v the current mix (676 returns charted)

1st serve to the backhand

ReturnNowTourOwnv LleytonValue
BH through the middle44%+6.4−2.4−1.1+3.0±1.8
BH crosscourt32%+8.8+5.1−0.7+13.2±2.6
BH down the line12%+4.2+4.0−0.7+7.6±4.1
BH slice through the middle6%−4.2−0.9+3.4−1.7±2.0
BH slice crosscourt4%+0.5+2.1+3.9+6.5±2.5

Lean BH crosscourt: +6.7±2.0 per 100 returns v the current mix (718 returns charted)

2nd serve to the forehand

ReturnNowTourOwnv LleytonValue
FH through the middle47%−3.5+1.7+2.0+0.2±2.1
FH down the line26%−1.8+0.9+2.2+1.3±3.8
FH crosscourt26%−0.2+1.4+1.4+2.6±3.5
BH inside-in2%+2.5−0.4+0.2+2.4±1.9

Lean FH crosscourt: +1.5±3.0 per 100 returns v the current mix (286 returns charted, inside the 90% margin)

2nd serve to the backhand

ReturnNowTourOwnv LleytonValue
BH crosscourt50%+1.0+1.5+0.2+2.8±2.0
BH through the middle35%−2.9+1.0+1.2−0.7±1.7
BH down the line12%−0.2+3.9+1.2+4.9±4.1
FH through the middle2%−2.9−1.0+2.0−1.8±1.5
FH inside-out1%+1.0+0.4+2.2+3.6±2.3

Lean BH down the line: +3.1±3.8 per 100 returns v the current mix (486 returns charted, inside the 90% margin)

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.

Lleyton Hewitt

Favour

ShotEdgeOwnTheirs
FH to their backhand · return+9.1±4.3+3.5+5.6
BH to their forehand · return+7.8±5.3+4.5+3.3
FH to their forehand · return+6.7±4.7+2.6+4.2
FH to their backhand · rally+5.5±3.4+1.9+3.7
BH volley to their forehand · rally+5.3±7.0+3.9+1.5
FH to their backhand · return +1+5.1±4.7+2.5+2.6

Avoid

ShotEdgeOwnTheirs
FH volley to their backhand · rally−5.2±7.6−0.4−4.8
Smash to their backhand · rally−3.4±5.2−3.4+0.1
BH slice to their backhand · serve +1−1.7±3.4−2.0+0.4
BH slice to their forehand · rally−1.2±3.5−4.2+3.0
FH to the middle · serve +1−0.9±2.8−1.5+0.6

Michael Chang

Favour

ShotEdgeOwnTheirs
BH to their forehand · return+7.7±5.2+6.6+1.1
FH to the middle · serve +1+4.9±3.3+3.3+1.5
FH to their backhand · return+4.5±4.4+4.4+0.1
BH to their backhand · rally+4.1±2.9+2.9+1.1
BH to their backhand · return+3.2±3.9+3.9−0.7
FH to the middle · rally+2.9±2.8+1.7+1.3

Avoid

ShotEdgeOwnTheirs
BH volley to their forehand · rally−8.8±7.3−4.7−4.2
FH volley to their backhand · rally−6.4±6.7−0.3−6.1
FH to their forehand · serve +1−3.5±4.2−1.9−1.6
FH to their forehand · return−3.3±4.8−1.2−2.2
FH volley to their forehand · rally−2.8±6.5−2.1−0.7

Against Michael Chang-like opponents

Lleyton Hewitt vMatchesServe pts wonReturn pts won
All charted opponents–63.8%38.1%
Players most similar to Michael Chang30 64.0%37.5%

Similar by tactical fingerprint: Andy Murray, Marcos Baghdatis, Andy Roddick, David Nalbandian, Marat Safin, Juan Carlos Ferrero, Arnaud Clement, Magnus Norman, Aaron Krickstein. When two players have rarely met, their records against these lookalikes fill the gap.