RallyIQ

Game plan

Juncheng Shang v Kevin King

Every number combines what Juncheng Shang does well with what Kevin King allows, each measured against the tour average and shrunk toward it when the sample is thin. Flip perspective

Forecast

Juncheng Shang wins, best of 3 81%90%: 43%–97% · best of 5: 86%
Serve points won 63.7% / 56.9% Juncheng / Kevin · tour 61.3%
Strengths only, no similarity priors 81%serve 63.7% / 56.9%

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 At least one of them is no longer active or has too little charted in the last three seasons, so both are compared on their careers.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 Juncheng Shang's record against Kevin King's tactical lookalikes and in their charted head-to-heads. 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

CareerJunchengKevin
Direction choice−0.21 ±0.13
better than 13%
−0.05 ±0.05
better than 44%
Shot selection+0.51 ±0.30
better than 94%
+0.49 ±0.15
better than 93%
Execution−0.47 ±0.59
better than 46%
−2.29 ±1.18
better than 1%
Points left on the table3.00 ±0.24
lower than 19%
3.19 ±0.20
lower than 12%

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.

Juncheng Shang serving

Deuce court

1st serveNowJuncheng winsv KevinMatchupOptimal
Wide35%74%76%77.2%±8.648% ▲
Body13%60%62%59.1%±14.413%
T52%67%67%57.6%±10.139% ▼

Optimal v Kevin King: +0.8±1.0 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving wide every time would read +12.6 per 100 first serves in before the returner adjusts.

Ad court

1st serveNowJuncheng winsv KevinMatchupOptimal
Wide55%65%76%68.4%±9.855%
Body16%68%64%69.5%±13.83% ▼
T29%72%76%75.8%±9.542% ▲

Optimal v Kevin King: +0.6±1.1 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving T every time would read +5.1 per 100 first serves in before the returner adjusts.

Kevin King serving

Deuce court

1st serveNowKevin winsv JunchengMatchupOptimal
Wide43%81%70%79.0%±7.848% ▲
Body12%60%65%62.3%±14.80% ▼
T45%72%78%74.7%±8.352% ▲

Optimal v Juncheng Shang: +0.6±0.8 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving wide every time would read +3.9 per 100 first serves in before the returner adjusts.

Ad court

1st serveNowKevin winsv JunchengMatchupOptimal
Wide53%75%69%71.2%±8.950% ▼
Body11%65%63%64.9%±14.00% ▼
T37%74%73%75.8%±9.050% ▲

Optimal v Juncheng Shang: +0.3±1.0 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving T every time would read +3.6 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.

Juncheng Shang returning

1st serve to the forehand

ReturnNowTourOwnv KevinValue
FH through the middle53%+4.3+1.4−5.1+0.6±3.0
FH down the line20%+1.7−0.5−1.9−0.7±4.5
FH crosscourt16%+5.5+1.6−2.5+4.6±4.1
FH slice through the middle7%−4.2−1.0−1.0−6.3±2.0
FH slice crosscourt4%−4.3−0.5±0.0−4.9±1.3

Lean FH crosscourt: +4.3±3.9 per 100 returns v the current mix (166 returns charted)

1st serve to the backhand

ReturnNowTourOwnv KevinValue
BH through the middle46%+6.4+0.8−2.0+5.2±2.8
BH crosscourt26%+8.8+0.5+0.3+9.6±3.6
BH down the line14%+4.2−1.7+1.0+3.5±4.5
BH slice through the middle10%−4.2−1.3−2.9−8.4±2.3
BH slice down the line4%−8.4−0.2−1.7−10.3±2.5

Lean BH crosscourt: +5.6±3.1 per 100 returns v the current mix (175 returns charted)

2nd serve to the forehand

ReturnNowTourOwnv KevinValue
FH through the middle60%−3.5+1.2−0.1−2.4±2.9
FH crosscourt32%−0.2−2.2+2.2−0.2±3.8
FH down the line8%−1.8−1.2+0.9−2.0±3.9

Lean FH crosscourt: +1.4±3.1 per 100 returns v the current mix (65 returns charted, inside the 90% margin)

2nd serve to the backhand

ReturnNowTourOwnv KevinValue
BH through the middle52%−2.9−0.7−4.0−7.6±2.6
BH crosscourt20%+1.0+2.3−1.9+1.4±3.0
BH down the line18%−0.2+1.3−2.1−1.0±4.6
FH inside-in5%+0.6−1.9+2.2+0.8±3.3
FH through the middle5%−2.9+0.4−0.1−2.6±2.0

Lean BH crosscourt: +5.3±2.8 per 100 returns v the current mix (132 returns charted)

Kevin King returning

1st serve to the forehand

ReturnNowTourOwnv JunchengValue
FH through the middle31%+4.3+0.7+1.0+5.9±3.1
FH down the line20%+1.7+0.3−0.2+1.7±4.2
FH slice through the middle20%−4.2−2.1−1.2−7.5±2.2
FH slice down the line14%−4.3±0.0−0.3−4.5±2.7
FH crosscourt10%+5.5−0.1+1.2+6.5±4.0

Lean FH through the middle: +5.4±2.4 per 100 returns v the current mix (132 returns charted)

1st serve to the backhand

ReturnNowTourOwnv JunchengValue
BH through the middle52%+6.4−4.3+3.5+5.6±2.6
BH slice through the middle14%−4.2−2.2+0.2−6.2±2.4
BH down the line14%+4.2−0.3+4.4+8.3±4.5
BH crosscourt12%+8.8−0.5−0.2+8.0±3.5
BH slice down the line5%−8.4−1.6+1.5−8.5±3.0

Lean BH down the line: +4.7±4.2 per 100 returns v the current mix (191 returns charted)

2nd serve to the forehand

ReturnNowTourOwnv JunchengValue
FH down the line37%−1.8−4.4−2.2−8.4±4.4
FH through the middle37%−3.5−1.3−0.3−5.0±2.7
FH crosscourt26%−0.2−0.9−0.6−1.7±3.9

Lean FH through the middle: +0.4±2.6 per 100 returns v the current mix (46 returns charted, inside the 90% margin)

2nd serve to the backhand

ReturnNowTourOwnv JunchengValue
BH through the middle52%−2.9−0.4+1.1−2.2±2.5
BH crosscourt26%+1.0+0.2+1.5+2.7±3.1
BH down the line22%−0.2+1.8+0.4+2.0±4.7

Lean BH crosscourt: +2.7±2.9 per 100 returns v the current mix (77 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 clay. Each player's clay record is shrunk toward their all-surface one, so a thin sample on it moves the numbers only a little.

Juncheng Shang

Favour

ShotEdgeOwnTheirs
BH to their forehand · rally+6.1±5.5+5.7+0.4
BH to their backhand · rally+2.4±3.9+1.3+1.0
FH to their forehand · rally−1.4±4.7−0.9−0.4
FH to the middle · return−2.2±3.6+3.1−5.3
FH to their backhand · rally−2.3±4.0+0.9−3.2
FH to their backhand · return−3.6±5.0−2.7−0.9

Avoid

ShotEdgeOwnTheirs
FH to their backhand · serve +1−6.9±4.8−1.7−5.2
FH to their forehand · serve +1−4.3±5.6−3.7−0.6
BH to the middle · return−4.2±3.4+1.2−5.4
FH to their backhand · return−3.6±5.0−2.7−0.9
FH to their backhand · rally−2.3±4.0+0.9−3.2

Kevin King

Favour

ShotEdgeOwnTheirs
BH to the middle · rally+1.6±2.8−0.7+2.3
FH to their forehand · serve +1+1.6±5.6+1.4+0.2
BH to their backhand · return+1.5±4.4+0.7+0.8
BH to their forehand · rally+1.4±5.1−1.1+2.5
BH to the middle · return+1.4±3.3−4.4+5.8
FH to the middle · rally+1.3±3.3−2.9+4.2

Avoid

ShotEdgeOwnTheirs
FH to their forehand · rally−11.9±4.8−12.5+0.6
FH to their backhand · return +1−2.6±5.6+1.6−4.2
FH to their backhand · rally−1.8±4.3−1.3−0.5
BH to their backhand · rally−1.6±4.0−2.9+1.3
FH to the middle · return−1.1±3.7−1.6+0.5

Against Kevin King-like opponents

Juncheng Shang vMatchesServe pts wonReturn pts won
All charted opponents–61.3%36.6%

Similar by tactical fingerprint: Learner Tien, Joao Fonseca, Hubert Hurkacz, Alexei Popyrin, Kyle Edmund, Fernando Verdasco, Jo Wilfried Tsonga, Roger Federer, James Blake, Robin Soderling. When two players have rarely met, their records against these lookalikes fill the gap.