RallyIQ

Game plan

Philipp Kohlschreiber v Juan Martin Del Potro

Every number combines what Philipp Kohlschreiber does well with what Juan Martin Del Potro allows, each measured against the tour average and shrunk toward it when the sample is thin. Flip perspective

Forecast

Philipp Kohlschreiber wins, best of 3 22%90%: 9%–42% · best of 5: 16%
Serve points won 62.1% / 68.5% Philipp / Juan · tour 63.4%
Strengths only, no similarity priors 24%serve 62.7% / 68.3%

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 At least one of them is no longer active or has too little charted in the last three seasons, so both are compared on their careers.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 Philipp Kohlschreiber's record against Juan Martin Del Potro's tactical lookalikes and in their charted head-to-heads (lookalikes: −1.5 on serve, −0.9 on return vs expectation (1123 points); head-to-head: −3.1 on serve, +1.7 on return vs expectation (178 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

CareerPhilippJuan
Direction choice+0.07 ±0.06
better than 75%
+0.16 ±0.04
better than 90%
Shot selection−0.21 ±0.11
better than 29%
−0.40 ±0.07
better than 17%
Execution−0.24 ±0.45
better than 56%
+1.15 ±0.18
better than 97%
Points left on the table2.49 ±0.11
lower than 62%
2.10 ±0.05
lower than 98%

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.

Philipp Kohlschreiber serving

Deuce court

1st serveNowPhilipp winsv JuanMatchupOptimal
Wide37%71%72%70.2%±4.135% ▼
Body11%66%61%64.0%±7.00% ▼
T51%73%76%73.8%±3.665% ▲

Optimal v Juan Martin Del Potro: +0.6±0.6 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving T every time would read +2.4 per 100 first serves in before the returner adjusts.

Ad court

1st serveNowPhilipp winsv JuanMatchupOptimal
Wide51%70%72%69.7%±3.951%
Body13%62%63%62.1%±7.30% ▼
T36%69%72%69.3%±4.649% ▲

Optimal v Juan Martin Del Potro: +0.7±0.7 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving wide every time would read +1.2 per 100 first serves in before the returner adjusts.

Juan Martin Del Potro serving

Deuce court

1st serveNowJuan winsv PhilippMatchupOptimal
Wide35%73%76%76.5%±3.748% ▲
Body12%65%57%59.1%±6.90% ▼
T53%76%74%74.8%±3.552% ▼

Optimal v Philipp Kohlschreiber: +1.4±0.6 per 100 first serves (faults included) over the current mix. Serving wide every time would read +3.0 per 100 first serves in before the returner adjusts.

Ad court

1st serveNowJuan winsv PhilippMatchupOptimal
Wide47%78%74%79.7%±3.260% ▲
Body10%64%62%62.6%±6.80% ▼
T43%75%77%78.9%±3.940% ▼

Optimal v Philipp Kohlschreiber: +1.0±0.6 per 100 first serves (faults included) over the current mix. Serving wide 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.

Philipp Kohlschreiber returning

1st serve to the forehand

ReturnNowTourOwnv JuanValue
FH through the middle48%+4.3−2.0+1.4+3.6±1.9
FH crosscourt29%+5.5−3.4−1.9+0.2±3.4
FH down the line18%+1.7−1.9+1.2+1.0±3.5
FH slice through the middle3%−4.2+0.3+0.6−3.3±1.9
BH inside-in1%+7.7−0.3−2.0+5.4±2.1

Lean FH through the middle: +1.7±1.5 per 100 returns v the current mix (522 returns charted)

1st serve to the backhand

ReturnNowTourOwnv JuanValue
BH through the middle33%+6.4−1.2−0.2+5.0±1.7
BH crosscourt18%+8.8−0.8−2.0+6.0±2.6
BH slice through the middle18%−4.2−0.3+1.2−3.3±1.8
BH down the line14%+4.2−2.1+3.2+5.3±3.7
BH slice crosscourt13%+0.5+1.4−1.0+0.9±2.4

Lean BH crosscourt: +3.3±2.3 per 100 returns v the current mix (731 returns charted)

2nd serve to the forehand

ReturnNowTourOwnv JuanValue
FH through the middle47%−3.5−0.9−0.5−4.9±2.3
FH crosscourt30%−0.2−2.7−2.4−5.3±4.0
FH down the line23%−1.8−2.7+1.0−3.4±4.0

Lean FH down the line: +1.3±3.5 per 100 returns v the current mix (143 returns charted, inside the 90% margin)

2nd serve to the backhand

ReturnNowTourOwnv JuanValue
BH through the middle35%−2.9+0.5−0.4−2.8±1.7
BH crosscourt24%+1.0−2.0+0.7−0.3±2.4
FH through the middle13%−2.9+0.6−0.5−2.8±2.0
BH down the line11%−0.2−1.3+1.2−0.3±4.2
FH inside-in6%+0.6−1.0−2.4−2.8±3.9
FH inside-out5%+1.0−0.2+1.0+1.8±3.0

Lean FH inside-out: +3.6±3.1 per 100 returns v the current mix (505 returns charted)

Juan Martin Del Potro returning

1st serve to the forehand

ReturnNowTourOwnv PhilippValue
FH through the middle46%+4.3+1.2−0.6+4.9±1.7
FH crosscourt30%+5.5+2.6−0.5+7.6±3.2
FH down the line16%+1.7+2.5+0.4+4.6±3.5
FH slice through the middle4%−4.2−1.1−0.1−5.4±2.3
FH slice down the line2%−4.3−2.4−0.4−7.1±2.9

Lean FH crosscourt: +2.7±2.5 per 100 returns v the current mix (2410 returns charted)

1st serve to the backhand

ReturnNowTourOwnv PhilippValue
BH through the middle30%+6.4+1.9±0.0+8.4±1.6
BH crosscourt25%+8.8+3.2+1.5+13.5±2.2
BH slice through the middle22%−4.2+2.3−2.1−4.1±1.9
BH slice crosscourt12%+0.5+1.1+1.5+3.1±2.5
BH down the line7%+4.2+6.0+1.1+11.3±4.1

Lean BH crosscourt: +7.6±1.8 per 100 returns v the current mix (2945 returns charted)

2nd serve to the forehand

ReturnNowTourOwnv PhilippValue
FH through the middle37%−3.5+0.3−0.7−3.8±2.3
FH crosscourt34%−0.2−2.2−1.7−4.1±3.8
FH down the line18%−1.8+1.4−0.4−0.7±4.4
FH slice through the middle4%−12.7+1.4−0.9−12.1±2.0
FH slice down the line3%−9.4+2.6±0.0−6.8±2.0

Lean FH down the line: +2.9±3.9 per 100 returns v the current mix (605 returns charted, inside the 90% margin)

2nd serve to the backhand

ReturnNowTourOwnv PhilippValue
BH crosscourt47%+1.0+0.9+1.3+3.3±2.0
BH through the middle37%−2.9+0.3−1.1−3.6±1.6
BH down the line6%−0.2−0.8+1.1+0.1±4.7
FH through the middle4%−2.9+0.4−0.7−3.2±2.2
FH inside-out2%+1.0+0.4−0.4+1.0±3.6

Lean BH crosscourt: +3.4±1.3 per 100 returns v the current mix (1911 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.

Philipp Kohlschreiber

Favour

ShotEdgeOwnTheirs
BH to their forehand · serve +1+4.7±3.7+3.7+1.0
BH to the middle · serve +1+4.0±1.9+2.4+1.7
FH slice to the middle · rally+2.6±2.7+2.3+0.4
BH to their forehand · return+2.5±3.0+0.1+2.5
BH slice to their backhand · return+1.8±2.2+2.7−0.9
FH to their backhand · rally+1.8±1.3+1.5+0.3

Avoid

ShotEdgeOwnTheirs
FH to their forehand · return−4.4±3.0−2.6−1.8
BH to their forehand · rally−4.0±2.6−4.2+0.2
BH slice to their forehand · rally−4.0±2.9−1.9−2.1
BH to their backhand · return−3.2±1.8−2.4−0.8
BH to their backhand · return +1−3.1±2.3−1.1−2.0

Juan Martin Del Potro

Favour

ShotEdgeOwnTheirs
BH to their forehand · return+3.8±3.3+2.4+1.4
BH to their backhand · return+3.6±1.6+1.7+1.9
FH slice to the middle · rally+3.5±2.7+2.3+1.2
FH to their forehand · serve +1+3.3±2.1+1.4+1.8
BH slice to their backhand · return+3.0±2.4+2.0+1.0
FH to their backhand · return+2.3±2.6+2.3±0.0

Avoid

ShotEdgeOwnTheirs
BH to their forehand · return +1−4.0±3.9+0.1−4.0
BH slice to their backhand · return +1−2.2±2.1+0.6−2.8
BH slice to their forehand · rally−1.8±2.9+1.3−3.2
BH to the middle · serve +1−1.7±2.0+0.1−1.8
BH slice to the middle · rally−1.2±1.8+1.0−2.2

Against Juan Martin Del Potro-like opponents

Philipp Kohlschreiber vMatchesServe pts wonReturn pts won
All charted opponents–63.5%35.2%
Players most similar to Juan Martin Del Potro6 62.8%33.3%
Juan Martin Del Potro (charted head-to-head)1 59.6%33.3%

Similar by tactical fingerprint: Stefanos Tsitsipas, Andrey Rublev, Gael Monfils, Miomir Kecmanovic, Borna Coric, David Goffin, Dominic Thiem, Nicolas Almagro, Nikolay Davydenko. When two players have rarely met, their records against these lookalikes fill the gap.

Charted head-to-head