RallyIQ

Game plan

Tennys Sandgren v Jiri Lehecka

Every number combines what Tennys Sandgren does well with what Jiri Lehecka allows, each measured against the tour average and shrunk toward it when the sample is thin. Flip perspective

Forecast

Tennys Sandgren wins, best of 3 50%90%: 32%–69% · best of 5: 51%
Serve points won 66.9% / 66.9% Tennys / Jiri · tour 63.8%
Strengths only, no similarity priors 50%serve 66.7% / 66.7%

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 At least one of them is no longer active or has too little charted in the last three seasons, so both are compared on their careers.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 Tennys Sandgren's record against Jiri Lehecka's tactical lookalikes and in their charted head-to-heads (lookalikes: +3.4 on serve, −1.4 on return vs expectation (274 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

CareerTennysJiri
Direction choice−0.09 ±0.15
better than 34%
−0.11 ±0.11
better than 30%
Shot selection−0.45 ±0.14
better than 13%
−0.02 ±0.14
better than 49%
Execution−0.92 ±0.57
better than 27%
−0.37 ±0.43
better than 50%
Points left on the table2.53 ±0.20
lower than 58%
2.73 ±0.18
lower than 37%

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.

Tennys Sandgren serving

Deuce court

1st serveNowTennys winsv JiriMatchupOptimal
Wide53%72%77%76.1%±5.166% ▲
Body5%67%60%63.7%±13.40% ▼
T42%77%76%77.5%±5.634% ▼

Optimal v Jiri Lehecka: +0.4±0.7 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving T every time would read +1.5 per 100 first serves in before the returner adjusts.

Ad court

1st serveNowTennys winsv JiriMatchupOptimal
Wide57%72%77%77.0%±5.555% ▼
Body11%57%67%61.5%±12.40% ▼
T32%70%77%75.4%±6.245% ▲

Optimal v Jiri Lehecka: +0.8±0.8 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving wide every time would read +2.2 per 100 first serves in before the returner adjusts.

Jiri Lehecka serving

Deuce court

1st serveNowJiri winsv TennysMatchupOptimal
Wide44%72%75%74.2%±5.857% ▲
Body12%60%63%60.2%±11.50% ▼
T45%76%78%78.1%±6.043% ▼

Optimal v Tennys Sandgren: +0.7±0.8 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving T every time would read +3.8 per 100 first serves in before the returner adjusts.

Ad court

1st serveNowJiri winsv TennysMatchupOptimal
Wide54%73%78%77.8%±5.567% ▲
Body9%65%67%69.3%±11.09%
T37%72%71%71.7%±6.524% ▼

Optimal v Tennys Sandgren: +0.4±0.8 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving wide every time would read +3.0 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.

Tennys Sandgren returning

1st serve to the forehand

ReturnNowTourOwnv JiriValue
FH through the middle30%+4.3−1.4+1.8+4.6±2.6
FH slice through the middle28%−4.2−1.7+0.5−5.4±2.2
FH crosscourt22%+5.5+4.2+4.2+13.9±4.2
FH slice crosscourt9%−4.3−1.3+2.8−2.9±2.7
FH down the line6%+1.7−1.1+1.1+1.7±3.9

Lean FH crosscourt: +11.4±3.4 per 100 returns v the current mix (261 returns charted)

1st serve to the backhand

ReturnNowTourOwnv JiriValue
BH through the middle32%+6.4−1.5+4.1+9.0±2.4
BH crosscourt23%+8.8−2.8+3.7+9.6±3.3
BH slice through the middle21%−4.2+0.5+1.0−2.7±2.3
BH slice crosscourt12%+0.5−1.6+0.3−0.8±3.0
BH down the line7%+4.2+1.9+1.9+8.0±4.3

Lean BH crosscourt: +5.1±2.7 per 100 returns v the current mix (222 returns charted)

2nd serve to the forehand

ReturnNowTourOwnv JiriValue
FH crosscourt38%−0.2+1.4−0.9+0.3±4.1
FH through the middle37%−3.5−0.1+1.1−2.5±2.4
FH down the line18%−1.8+0.1−1.2−2.9±4.0
FH slice through the middle7%−12.7−0.9+0.4−13.2±1.6

Lean FH crosscourt: +2.6±2.8 per 100 returns v the current mix (68 returns charted, inside the 90% margin)

2nd serve to the backhand

ReturnNowTourOwnv JiriValue
BH through the middle51%−2.9+0.9+2.3+0.3±2.2
BH crosscourt35%+1.0±0.0+1.6+2.6±2.9
BH down the line9%−0.2−1.2−2.8−4.2±4.5
FH through the middle5%−2.9−0.1+1.1−1.9±1.6

Lean BH crosscourt: +2.1±2.3 per 100 returns v the current mix (139 returns charted, inside the 90% margin)

Jiri Lehecka returning

1st serve to the forehand

ReturnNowTourOwnv TennysValue
FH through the middle36%+4.3−0.8+1.2+4.6±2.6
FH crosscourt20%+5.5+1.9+1.6+9.1±4.2
FH slice through the middle19%−4.2−1.2−0.9−6.3±2.2
FH slice crosscourt10%−4.3−0.3+0.3−4.3±2.7
FH down the line10%+1.7−0.9−2.2−1.4±4.4

Lean FH crosscourt: +7.7±3.6 per 100 returns v the current mix (705 returns charted)

1st serve to the backhand

ReturnNowTourOwnv TennysValue
BH through the middle30%+6.4+1.8+0.8+9.0±2.6
BH slice through the middle24%−4.2−0.9−1.8−6.9±2.2
BH crosscourt22%+8.8+1.6+3.4+13.7±3.3
BH slice crosscourt14%+0.5−1.6−0.1−1.2±2.9
BH down the line5%+4.2+2.0−1.7+4.5±4.4

Lean BH crosscourt: +10.0±2.8 per 100 returns v the current mix (786 returns charted)

2nd serve to the forehand

ReturnNowTourOwnv TennysValue
FH through the middle43%−3.5−0.8+0.3−4.0±2.8
FH crosscourt30%−0.2+1.8−1.0+0.5±4.4
FH down the line20%−1.8−1.7−0.2−3.7±4.7
FH slice through the middle5%−12.7+0.6+0.3−11.8±1.8
FH slice down the line3%−9.4+0.3±0.0−9.2±1.4

Lean FH crosscourt: +3.7±3.4 per 100 returns v the current mix (210 returns charted)

2nd serve to the backhand

ReturnNowTourOwnv TennysValue
BH through the middle44%−2.9−0.5+0.6−2.8±2.2
BH crosscourt30%+1.0+1.1+0.5+2.6±3.0
FH through the middle9%−2.9+1.6+0.3−1.0±2.4
BH down the line9%−0.2+5.3+0.9+6.0±4.8
FH inside-in3%+0.6−1.7−1.0−2.2±4.2

Lean BH down the line: +6.5±4.6 per 100 returns v the current mix (626 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 hard. Each player's hard record is shrunk toward their all-surface one, so a thin sample on it moves the numbers only a little.

Tennys Sandgren

Favour

ShotEdgeOwnTheirs
FH to their forehand · return+5.5±5.1+3.0+2.5
BH to the middle · return+2.6±2.4−1.1+3.6
BH to their forehand · rally+1.5±5.0+0.3+1.2
FH to their forehand · rally+1.1±2.7+0.4+0.7
BH to their backhand · return+1.1±3.5−2.3+3.3
BH to the middle · rally+1.0±2.0±0.0+1.0

Avoid

ShotEdgeOwnTheirs
FH to their forehand · serve +1−7.6±4.3−6.2−1.3
FH to their backhand · serve +1−6.0±3.7−2.6−3.4
BH slice to the middle · rally−5.7±3.0−3.7−2.0
BH to their backhand · serve +1−4.6±4.1−3.2−1.4
FH to their forehand · return +1−4.2±5.1−5.8+1.6

Jiri Lehecka

Favour

ShotEdgeOwnTheirs
BH to their backhand · return+2.2±3.7−0.6+2.8
FH to their forehand · return+1.2±5.5+0.8+0.4
FH to their backhand · serve +1+0.8±3.6+1.1−0.3
FH to the middle · serve +1+0.6±3.1−0.7+1.3
BH to the middle · return−0.6±2.5±0.0−0.7
BH to their backhand · return +1−0.8±4.1+2.5−3.2

Avoid

ShotEdgeOwnTheirs
FH to their backhand · return +1−9.4±5.0−0.4−9.0
BH to their forehand · rally−6.9±5.1−5.1−1.8
FH to their backhand · return−5.0±5.7−1.5−3.6
FH to their forehand · serve +1−3.2±3.9+0.5−3.7
BH to the middle · rally−2.6±2.1−1.9−0.8

Against Jiri Lehecka-like opponents

Tennys Sandgren vMatchesServe pts wonReturn pts won
All charted opponents–63.3%33.2%
Players most similar to Jiri Lehecka1 66.2%35.6%

Similar by tactical fingerprint: Ben Shelton, Arthur Rinderknech, Zhizhen Zhang, Alexander Shevchenko, Zizou Bergs, Jan Lennard Struff, Luca Nardi, Gabriel Diallo, Fabio Fognini, Gregoire Barrere. When two players have rarely met, their records against these lookalikes fill the gap.