RallyIQ

Game plan

Jack Draper v Tallon Griekspoor

Every number combines what Jack Draper does well with what Tallon Griekspoor allows, each measured against the tour average and shrunk toward it when the sample is thin. Flip perspective

Forecast

Jack Draper wins, best of 3 90%90%: 74%–97% · best of 5: 94%
Serve points won 72.3% / 61.8% Jack / Tallon · tour 63.5%
Strengths only, no similarity priors 87%serve 71.8% / 62.5%

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 Jack Draper's record against Tallon Griekspoor's tactical lookalikes and in their charted head-to-heads (lookalikes: +4.8 on serve, +6.6 on return vs expectation (348 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

CareerJackTallon
Direction choice+0.10 ±0.07
better than 81%
+0.19 ±0.03
better than 93%
Shot selection+0.26 ±0.13
better than 77%
+0.07 ±0.08
better than 61%
Execution+1.21 ±0.65
better than 98%
−1.38 ±0.28
better than 13%
Points left on the table2.75 ±0.11
lower than 35%
2.42 ±0.06
lower than 71%

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: Jack Draper +0.78, Tallon Griekspoor −0.96. 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.

Jack Draper serving

Deuce court

1st serveNowJack winsv TallonMatchupOptimal
Wide41%71%76%74.3%±4.533% ▼
Body5%60%64%60.7%±10.30% ▼
T54%73%79%77.5%±3.667% ▲

Optimal v Tallon Griekspoor: +0.4±0.5 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving T every time would read +2.1 per 100 first serves in before the returner adjusts.

Ad court

1st serveNowJack winsv TallonMatchupOptimal
Wide51%76%77%79.9%±3.564% ▲
Body6%65%66%67.9%±9.50% ▼
T43%73%74%75.2%±4.636% ▼

Optimal v Tallon Griekspoor: +0.6±0.5 per 100 first serves (faults included) over the current mix. Serving wide every time would read +2.7 per 100 first serves in before the returner adjusts.

Tallon Griekspoor serving

Deuce court

1st serveNowTallon winsv JackMatchupOptimal
Wide48%74%72%72.9%±3.944% ▼
Body8%65%62%63.4%±9.90% ▼
T43%77%71%74.2%±4.356% ▲

Optimal v Jack Draper: +0.4±0.6 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 serveNowTallon winsv JackMatchupOptimal
Wide54%76%75%77.9%±3.967% ▲
Body9%60%66%63.0%±10.00% ▼
T37%73%71%71.9%±4.533% ▼

Optimal v Jack Draper: +0.4±0.6 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving wide 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.

Jack Draper returning

1st serve to the forehand

ReturnNowTourOwnv TallonValue
FH through the middle51%+4.3+0.3−0.6+4.0±1.9
FH crosscourt27%+5.5+0.1−3.3+2.2±3.5
FH down the line14%+1.7−1.2−2.1−1.6±3.8
FH slice through the middle6%−4.2+0.9−2.5−5.7±2.0
FH slice crosscourt2%−4.3+1.5−2.0−4.9±2.4

Lean FH through the middle: +2.1±1.4 per 100 returns v the current mix (427 returns charted)

1st serve to the backhand

ReturnNowTourOwnv TallonValue
BH through the middle46%+6.4+1.0−1.7+5.8±1.7
BH crosscourt28%+8.8−1.6−4.4+2.8±3.0
BH down the line12%+4.2+2.7−3.1+3.8±3.6
BH slice through the middle8%−4.2−1.0−3.9−9.1±2.1
BH slice down the line3%−8.4+0.6−3.9−11.7±2.9

Lean BH through the middle: +3.2±1.3 per 100 returns v the current mix (581 returns charted)

2nd serve to the forehand

ReturnNowTourOwnv TallonValue
FH through the middle46%−3.5−0.7+0.4−3.9±2.3
FH crosscourt31%−0.2−0.3−1.8−2.3±3.8
FH down the line18%−1.8+3.0−0.3+1.0±4.1
FH slice through the middle4%−12.7−2.1−1.9−16.6±2.0

Lean FH down the line: +4.0±3.7 per 100 returns v the current mix (179 returns charted)

2nd serve to the backhand

ReturnNowTourOwnv TallonValue
BH through the middle45%−2.9+2.0−0.9−1.8±1.7
BH crosscourt27%+1.0−1.7−3.8−4.6±2.9
FH through the middle9%−2.9+1.5+0.4−1.0±1.9
BH down the line8%−0.2+0.3−2.8−2.6±3.9
FH inside-in6%+0.6−0.3−1.8−1.5±3.7

Lean FH through the middle: +1.4±2.1 per 100 returns v the current mix (412 returns charted, inside the 90% margin)

Tallon Griekspoor returning

1st serve to the forehand

ReturnNowTourOwnv JackValue
FH through the middle42%+4.3−2.3+2.1+4.1±2.1
FH crosscourt26%+5.5−2.2+2.4+5.7±3.5
FH slice through the middle14%−4.2−3.3±0.0−7.6±2.1
FH down the line11%+1.7−3.9+0.9−1.3±4.1
FH slice down the line5%−4.3−1.9+0.6−5.5±3.0

Lean FH crosscourt: +4.3±2.8 per 100 returns v the current mix (1906 returns charted)

1st serve to the backhand

ReturnNowTourOwnv JackValue
BH through the middle32%+6.4−1.5+1.9+6.8±1.9
BH crosscourt27%+8.8−5.7+1.2+4.3±2.7
BH slice through the middle20%−4.2−3.1−0.8−8.1±2.0
BH slice crosscourt8%+0.5−4.8+1.8−2.6±2.7
BH down the line8%+4.2−2.1−0.2+1.9±4.3

Lean BH through the middle: +6.0±1.6 per 100 returns v the current mix (2010 returns charted)

2nd serve to the forehand

ReturnNowTourOwnv JackValue
FH crosscourt40%−0.2−1.0+1.5+0.3±3.9
FH through the middle39%−3.5−3.0−1.0−7.5±2.5
FH down the line15%−1.8−4.1+1.0−4.9±4.7
FH slice through the middle5%−12.7−2.6+0.7−14.5±2.0
FH slice down the line1%−9.4−0.4±0.0−9.8±1.3

Lean FH crosscourt: +4.6±2.6 per 100 returns v the current mix (471 returns charted)

2nd serve to the backhand

ReturnNowTourOwnv JackValue
BH through the middle38%−2.9−2.1+0.6−4.4±1.8
BH crosscourt31%+1.0−4.1−2.7−5.8±2.4
BH down the line9%−0.2−2.9−3.4−6.5±4.8
FH through the middle9%−2.9+0.6−1.0−3.3±2.2
FH inside-in6%+0.6+2.0+1.5+4.1±4.2

Lean FH inside-in: +8.3±4.2 per 100 returns v the current mix (1307 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.

Jack Draper

Favour

ShotEdgeOwnTheirs
BH to their forehand · rally+5.0±2.3+3.0+2.0
FH to their backhand · return +1+3.9±2.8+4.2−0.3
BH to their backhand · serve +1+3.4±2.6+4.0−0.6
BH to their forehand · serve +1+3.2±3.7+3.1+0.1
BH to the middle · return +1+3.0±1.9+2.8+0.2
FH to the middle · return +1+2.8±2.2+1.2+1.6

Avoid

ShotEdgeOwnTheirs
BH to their forehand · return−2.7±3.1+1.7−4.4
FH to their forehand · return +1−2.3±3.2−1.8−0.5
FH to their forehand · serve +1−1.7±2.3−1.3−0.4
FH to their backhand · return−1.6±2.7+1.3−2.9
FH to their forehand · return−1.6±3.4−0.2−1.4

Tallon Griekspoor

Favour

ShotEdgeOwnTheirs
FH to their backhand · return +1+2.5±2.6+0.2+2.2
FH to their forehand · return +1+2.0±3.0+0.1+1.9
FH to their backhand · rally+1.4±1.5−0.5+1.9
FH to their backhand · serve +1+1.3±2.0+0.4+1.0
FH to the middle · serve +1+1.3±2.1+0.1+1.2
FH to the middle · rally+1.1±1.6+0.2+0.9

Avoid

ShotEdgeOwnTheirs
BH to their forehand · return−6.0±3.1−4.1−1.8
BH to their backhand · return−5.8±2.4−4.2−1.5
BH to their backhand · serve +1−4.9±2.7−0.8−4.1
FH slice to the middle · return−3.9±2.0−4.2+0.3
FH slice to the middle · rally−2.9±2.7−1.1−1.8

Against Tallon Griekspoor-like opponents

Jack Draper vMatchesServe pts wonReturn pts won
All charted opponents–64.6%37.1%
Players most similar to Tallon Griekspoor3 71.3%44.3%

Similar by tactical fingerprint: Stefanos Tsitsipas, Arthur Fils, Ben Shelton, Tommy Paul, Felix Auger Aliassime, Alexei Popyrin, Zizou Bergs, Dominic Thiem, Lloyd Harris, Leonardo Mayer. When two players have rarely met, their records against these lookalikes fill the gap.