RallyIQ

Game plan

Radek Stepanek v Jonas Bjorkman

Every number combines what Radek Stepanek does well with what Jonas Bjorkman allows, each measured against the tour average and shrunk toward it when the sample is thin. Flip perspective

Forecast

Radek Stepanek wins, best of 3 28%90%: 5%–68% · best of 5: 24%
Serve points won 60.9% / 65.5% Radek / Jonas · tour 61.3%
Strengths only, no similarity priors 29%serve 60.8% / 65.2%

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 At least one of them is no longer active or has too little charted in the last three seasons, so both are compared on their careers.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 Radek Stepanek's record against Jonas Bjorkman's tactical lookalikes and in their charted head-to-heads (head-to-head: +1.0 on serve, −2.8 on return vs expectation (355 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

CareerRadekJonas
Direction choice+0.07 ±0.11
better than 74%
−0.13 ±0.17
better than 25%
Shot selection+0.44 ±0.15
better than 88%
+0.25 ±0.18
better than 76%
Execution−0.90 ±0.61
better than 27%
−1.30 ±0.45
better than 15%
Points left on the table3.18 ±0.23
lower than 13%
3.56 ±0.32
lower than 7%

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.

Radek Stepanek serving

Deuce court

1st serveNowRadek winsv JonasMatchupOptimal
Wide48%72%79%77.9%±6.348%
Body13%62%65%63.3%±11.60% ▼
T39%72%80%77.3%±7.252% ▲

Optimal v Jonas Bjorkman: +0.5±1.0 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving wide every time would read +2.1 per 100 first serves in before the returner adjusts.

Ad court

1st serveNowRadek winsv JonasMatchupOptimal
Wide43%68%79%74.3%±7.939% ▼
Body9%62%69%67.5%±12.20% ▼
T48%72%81%81.2%±5.961% ▲

Optimal v Jonas Bjorkman: +0.8±0.8 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving T every time would read +4.2 per 100 first serves in before the returner adjusts.

Jonas Bjorkman serving

Deuce court

1st serveNowJonas winsv RadekMatchupOptimal
Wide39%69%73%69.4%±7.539%
Body22%65%72%73.7%±9.19% ▼
T39%72%80%77.1%±7.052% ▲

Optimal v Radek Stepanek: +0.5±0.9 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving T every time would read +3.7 per 100 first serves in before the returner adjusts.

Ad court

1st serveNowJonas winsv RadekMatchupOptimal
Wide37%68%74%68.8%±8.550% ▲
Body19%59%69%64.6%±11.85% ▼
T44%67%75%70.5%±7.845%

Optimal v Radek Stepanek: +0.5±1.0 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving T every time would read +1.7 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.

Radek Stepanek returning

1st serve to the forehand

ReturnNowTourOwnv JonasValue
FH through the middle45%+4.3−3.1+0.4+1.6±2.8
FH down the line35%+1.7+0.4+0.8+2.9±4.3
FH crosscourt10%+5.5+1.3+3.5+10.2±4.4
FH slice through the middle5%−4.2−0.3−1.0−5.6±1.9
BH inside-in2%+7.7+1.3−0.4+8.6±3.3

Lean FH crosscourt: +7.6±4.4 per 100 returns v the current mix (311 returns charted)

1st serve to the backhand

ReturnNowTourOwnv JonasValue
BH crosscourt36%+8.8+0.5−0.4+8.9±3.5
BH through the middle35%+6.4+2.7+0.1+9.3±2.7
BH down the line13%+4.2+0.6−2.3+2.6±4.6
BH slice through the middle8%−4.2−2.1+0.9−5.4±2.4
BH slice crosscourt5%+0.5−0.1−0.4+0.1±2.8

Lean BH through the middle: +3.0±2.3 per 100 returns v the current mix (276 returns charted)

2nd serve to the forehand

ReturnNowTourOwnv JonasValue
FH down the line47%−1.8+1.5−0.7−1.0±4.7
FH through the middle38%−3.5±0.0−0.4−3.8±2.9
FH crosscourt15%−0.2−0.8−2.1−3.1±4.0

Lean FH down the line: +1.4±2.8 per 100 returns v the current mix (92 returns charted, inside the 90% margin)

2nd serve to the backhand

ReturnNowTourOwnv JonasValue
BH crosscourt49%+1.0+1.5−1.0+1.5±3.2
BH through the middle35%−2.9−2.0−0.3−5.2±2.5
BH down the line17%−0.2+3.2−3.0±0.0±4.8

Lean BH crosscourt: +2.6±2.1 per 100 returns v the current mix (138 returns charted)

Jonas Bjorkman returning

1st serve to the forehand

ReturnNowTourOwnv RadekValue
FH through the middle44%+4.3−0.5−2.0+1.7±2.7
FH crosscourt31%+5.5−4.9+1.9+2.5±4.4
FH down the line23%+1.7−2.0−4.3−4.6±4.3
FH slice through the middle2%−4.2−0.6−0.5−5.3±1.4

Lean FH crosscourt: +2.2±3.4 per 100 returns v the current mix (239 returns charted, inside the 90% margin)

1st serve to the backhand

ReturnNowTourOwnv RadekValue
BH through the middle41%+6.4−2.4+0.9+4.9±2.7
BH crosscourt34%+8.8+0.3+1.0+10.0±3.6
BH down the line8%+4.2−0.6+4.9+8.6±4.3
BH slice through the middle8%−4.2−1.3−1.3−6.8±2.3
BH slice crosscourt5%+0.5−0.6+1.7+1.6±2.5

Lean BH crosscourt: +4.6±2.6 per 100 returns v the current mix (167 returns charted)

2nd serve to the forehand

ReturnNowTourOwnv RadekValue
FH through the middle51%−3.5−0.4−0.5−4.4±2.9
FH crosscourt25%−0.2−1.0+2.3+1.0±4.0
FH down the line24%−1.8−0.3+0.7−1.4±4.5

Lean FH crosscourt: +3.3±3.6 per 100 returns v the current mix (84 returns charted, inside the 90% margin)

2nd serve to the backhand

ReturnNowTourOwnv RadekValue
BH crosscourt49%+1.0+0.7+1.6+3.3±3.2
BH through the middle33%−2.9+1.8+0.6−0.5±2.4
BH down the line19%−0.2+1.4−1.0+0.2±4.6

Lean BH crosscourt: +1.9±2.0 per 100 returns v the current mix (80 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.

Radek Stepanek

Favour

ShotEdgeOwnTheirs
BH volley to their backhand · serve +1+7.9±6.2+2.1+5.8
BH to their forehand · return +1+4.8±5.9+2.5+2.3
FH to their backhand · serve +1+1.9±5.2−1.0+2.9
BH to their backhand · return+0.6±3.5+1.6−1.1
BH to the middle · return+0.1±3.3−0.3+0.3
FH to their forehand · return +1−0.2±4.3−0.7+0.5

Avoid

ShotEdgeOwnTheirs
FH to their backhand · return +1−4.9±4.6−3.9−1.1
BH to the middle · rally−4.2±3.1−2.7−1.5
FH to their forehand · rally−3.9±4.9−4.7+0.7
BH to their forehand · rally−3.9±5.2−5.8+1.9
BH to their backhand · return +1−2.8±4.1+1.1−3.9

Jonas Bjorkman

Favour

ShotEdgeOwnTheirs
BH to their forehand · return +1+4.8±5.9−0.2+5.0
BH to their forehand · rally+3.3±5.1−1.9+5.2
BH to their forehand · return+2.6±5.4+1.6+1.0
BH to their backhand · serve +1+1.9±4.3+1.1+0.8
BH to their backhand · return+1.7±3.6+0.4+1.3
FH to their backhand · serve +1+1.4±4.5+1.2+0.2

Avoid

ShotEdgeOwnTheirs
FH to their backhand · return−7.0±4.4−1.5−5.5
FH to the middle · return−3.9±3.4−2.4−1.4
FH to the middle · rally−3.7±3.0−3.5−0.2
BH to the middle · serve +1−3.2±3.1−2.0−1.3
FH to their forehand · rally−2.8±4.8−2.6−0.2

Against Jonas Bjorkman-like opponents

Radek Stepanek vMatchesServe pts wonReturn pts won
All charted opponents–60.0%32.6%
Jonas Bjorkman (charted head-to-head)1 64.8%33.5%

Similar by tactical fingerprint: Mischa Zverev, Mario Ancic, Yevgeny Kafelnikov, Todd Martin, Cedric Pioline, Boris Becker, Malivai Washington, David Wheaton, Brad Gilbert. When two players have rarely met, their records against these lookalikes fill the gap.

Charted head-to-head