RallyIQ

Game plan

Karen Khachanov v Rinky Hijikata

Every number combines what Karen Khachanov does well with what Rinky Hijikata allows, each measured against the tour average and shrunk toward it when the sample is thin. Flip perspective

Forecast

Karen Khachanov wins, best of 3 81%90%: 47%–96% · best of 5: 86%
Serve points won 61.2% / 54.6% Karen / Rinky · tour 61.5%
Strengths only, no similarity priors 76%serve 61.4% / 55.9%

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. Both were charted enough in the last three seasons, so those carry the most weight. The result is then nudged by Karen Khachanov's record against Rinky Hijikata's tactical lookalikes and in their charted head-to-heads (lookalikes: −1.8 on serve, +10.1 on return vs expectation (431 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

CareerKarenRinky
Direction choice+0.01 ±0.06
better than 59%
+0.05 ±0.09
better than 70%
Shot selection−0.28 ±0.08
better than 25%
+0.25 ±0.27
better than 75%
Execution+0.50 ±0.28
better than 84%
−0.22 ±0.71
better than 57%
Points left on the table2.41 ±0.10
lower than 72%
2.53 ±0.15
lower than 57%

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: Karen Khachanov +0.73, Rinky Hijikata +1.04. 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.

Karen Khachanov serving

Deuce court

1st serveNowKaren winsv RinkyMatchupOptimal
Wide50%73%75%75.3%±5.463% ▲
Body5%63%65%64.3%±12.10% ▼
T45%73%71%68.8%±6.337% ▼

Optimal v Rinky Hijikata: +0.8±0.6 per 100 first serves (faults included) over the current mix. Serving wide every time would read +3.5 per 100 first serves in before the returner adjusts.

Ad court

1st serveNowKaren winsv RinkyMatchupOptimal
Wide52%74%75%76.1%±5.865% ▲
Body6%61%58%56.4%±14.30% ▼
T42%69%74%71.7%±6.335% ▼

Optimal v Rinky Hijikata: +0.6±0.7 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving wide every time would read +3.1 per 100 first serves in before the returner adjusts.

Rinky Hijikata serving

Deuce court

1st serveNowRinky winsv KarenMatchupOptimal
Wide48%67%74%68.4%±5.961% ▲
Body8%53%64%54.4%±11.70% ▼
T43%69%76%70.3%±6.439% ▼

Optimal v Karen Khachanov: +0.5±0.7 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving T every time would read +2.2 per 100 first serves in before the returner adjusts.

Ad court

1st serveNowRinky winsv KarenMatchupOptimal
Wide50%77%76%79.6%±5.363% ▲
Body6%63%65%65.3%±12.50% ▼
T44%72%72%72.0%±6.437% ▼

Optimal v Karen Khachanov: +0.5±0.7 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving wide every time would read +4.2 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.

Karen Khachanov returning

1st serve to the forehand

ReturnNowTourOwnv RinkyValue
FH through the middle36%+4.3+0.6+1.1+5.9±2.3
FH slice through the middle27%−4.2−0.9+0.9−4.1±1.5
FH crosscourt14%+5.5+0.4−0.2+5.7±4.0
FH down the line11%+1.7+1.1−0.7+2.0±4.2
FH slice down the line7%−4.3−0.5±0.0−4.7±2.1

Lean FH through the middle: +4.5±1.7 per 100 returns v the current mix (1496 returns charted)

1st serve to the backhand

ReturnNowTourOwnv RinkyValue
BH through the middle46%+6.4+0.5+1.7+8.6±2.2
BH crosscourt32%+8.8+1.1+1.2+11.0±3.0
BH down the line8%+4.2+4.2−1.9+6.5±4.5
BH slice through the middle8%−4.2−0.6+0.1−4.6±2.4
BH slice crosscourt4%+0.5−2.2+0.1−1.6±2.9

Lean BH crosscourt: +3.7±2.3 per 100 returns v the current mix (1202 returns charted)

2nd serve to the forehand

ReturnNowTourOwnv RinkyValue
FH through the middle53%−3.5−1.0+1.6−2.8±2.6
FH crosscourt26%−0.2+0.6+0.6+1.0±4.2
FH down the line18%−1.8−0.4−3.1−5.3±4.7
FH slice through the middle3%−12.7−2.1±0.0−14.8±1.4

Lean FH crosscourt: +3.6±3.5 per 100 returns v the current mix (443 returns charted)

2nd serve to the backhand

ReturnNowTourOwnv RinkyValue
BH crosscourt49%+1.0+1.1+3.1+5.2±2.7
BH through the middle37%−2.9+2.3+3.3+2.8±2.1
BH down the line6%−0.2+2.3+1.9+4.0±5.0
FH through the middle5%−2.9+0.9+1.6−0.4±2.4
FH inside-out2%+1.0−0.2−3.1−2.4±3.5

Lean BH crosscourt: +1.5±1.6 per 100 returns v the current mix (854 returns charted, inside the 90% margin)

Rinky Hijikata returning

1st serve to the forehand

ReturnNowTourOwnv KarenValue
FH through the middle53%+4.3−0.6+1.3+4.9±2.3
FH crosscourt29%+5.5+1.0+0.9+7.4±3.8
FH down the line14%+1.7−1.0+1.9+2.6±3.9
FH slice through the middle4%−4.2+0.8+0.1−3.3±1.8

Lean FH crosscourt: +2.4±3.0 per 100 returns v the current mix (222 returns charted, inside the 90% margin)

1st serve to the backhand

ReturnNowTourOwnv KarenValue
BH through the middle38%+6.4+2.1+1.7+10.3±2.2
BH crosscourt28%+8.8−2.7+0.3+6.4±3.1
BH down the line12%+4.2−2.2+0.4+2.4±4.3
BH slice through the middle11%−4.2−0.6+0.6−4.3±2.1
BH slice crosscourt8%+0.5−1.3+1.5+0.6±2.7

Lean BH through the middle: +5.1±1.7 per 100 returns v the current mix (222 returns charted)

2nd serve to the forehand

ReturnNowTourOwnv KarenValue
FH through the middle49%−3.5+0.6±0.0−2.8±2.5
FH crosscourt36%−0.2+1.2+2.3+3.3±4.1
FH down the line14%−1.8±0.0+0.6−1.2±3.8

Lean FH crosscourt: +3.6±2.9 per 100 returns v the current mix (77 returns charted)

2nd serve to the backhand

ReturnNowTourOwnv KarenValue
BH through the middle39%−2.9−0.1+0.6−2.3±2.1
BH crosscourt35%+1.0+2.4−0.8+2.6±2.7
BH down the line22%−0.2+0.6−1.8−1.4±4.7
FH inside-out5%+1.0+0.5+0.6+2.0±2.8

Lean BH crosscourt: +2.8±2.2 per 100 returns v the current mix (153 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 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.

Karen Khachanov

Favour

ShotEdgeOwnTheirs
BH to their forehand · return+5.6±5.0+5.6±0.0
BH slice to their backhand · rally+4.4±2.9+2.8+1.5
BH to the middle · return+4.1±2.3+1.3+2.8
FH to their backhand · serve +1+3.6±3.4+3.2+0.5
FH to the middle · rally+2.7±2.4+1.8+0.8
FH to their forehand · return+2.6±4.6+2.3+0.3

Avoid

ShotEdgeOwnTheirs
FH to their backhand · return−7.0±4.1−4.6−2.4
FH to their forehand · rally−1.9±3.1+0.1−2.0
FH to their forehand · serve +1−1.2±3.9−2.3+1.1
FH to their backhand · return +1−0.8±4.2+0.1−0.9
FH to their forehand · return +1−0.5±4.6−0.6+0.1

Rinky Hijikata

Favour

ShotEdgeOwnTheirs
FH to their forehand · serve +1+5.8±4.0+3.0+2.8
FH to their forehand · return+4.7±4.5+1.9+2.8
FH to their backhand · serve +1+4.7±3.4+3.0+1.7
BH to the middle · return+4.6±2.3+2.0+2.7
BH to their forehand · rally+3.4±4.3+2.5+0.9
BH to their forehand · return+2.4±5.1−0.1+2.5

Avoid

ShotEdgeOwnTheirs
FH to their backhand · return +1−8.0±4.3−3.3−4.8
FH to the middle · rally−4.1±2.3−2.4−1.7
BH to their backhand · return−2.7±3.1−0.3−2.4
BH to their backhand · serve +1−1.0±3.4−0.9−0.1
FH to their forehand · return +1−0.9±4.5−0.6−0.4

Against Rinky Hijikata-like opponents

Karen Khachanov vMatchesServe pts wonReturn pts won
All charted opponents–64.5%35.6%
Players most similar to Rinky Hijikata3 63.1%45.5%

Similar by tactical fingerprint: Marcos Giron, James Duckworth, Alexander Shevchenko, Laslo Djere, Alexandre Muller, Jordan Thompson, Fabio Fognini, Dominic Thiem, Gregoire Barrere. When two players have rarely met, their records against these lookalikes fill the gap.