Game plan
Karue Sell v Frances Tiafoe
Every number combines what Karue Sell does well with what Frances Tiafoe allows, each measured against the tour average and shrunk toward it when the sample is thin. Flip perspective
Forecast
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 At least one of them is no longer active or has too little charted in the last three seasons, so both are compared on their careers.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 Karue Sell's record against Frances Tiafoe's tactical lookalikes and in their charted head-to-heads. 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
| Career | Karue | Frances |
|---|---|---|
| Direction choice | +0.13 ±0.07 better than 87% | +0.06 ±0.06 better than 72% |
| Shot selection | +0.64 ±0.22 better than 97% | +0.14 ±0.09 better than 69% |
| Execution | −1.33 ±0.41 better than 15% | −0.26 ±0.34 better than 54% |
| Points left on the table | 2.20 ±0.12 lower than 93% | 2.38 ±0.11 lower than 75% |
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.
Karue Sell serving
Deuce court
| 1st serve | Now | Karue wins | v Frances | Matchup | Optimal |
|---|---|---|---|---|---|
| Wide | 58% | 69% | 75% | 70.5%±7.1 | 55% ▼ |
| Body | 10% | 62% | 65% | 64.3%±12.8 | 0% ▼ |
| T | 32% | 79% | 76% | 80.2%±7.9 | 45% ▲ |
Optimal v Frances Tiafoe: +0.9±0.8 per 100 first serves (faults included) over the current mix. Serving T every time would read +7.2 per 100 first serves in before the returner adjusts.
Ad court
| 1st serve | Now | Karue wins | v Frances | Matchup | Optimal |
|---|---|---|---|---|---|
| Wide | 43% | 74% | 78% | 78.4%±7.3 | 44% |
| Body | 16% | 63% | 67% | 66.8%±11.4 | 3% ▼ |
| T | 40% | 68% | 76% | 72.3%±8.6 | 53% ▲ |
Optimal v Frances Tiafoe: +0.3±0.9 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving wide every time would read +4.3 per 100 first serves in before the returner adjusts.
Frances Tiafoe serving
Deuce court
| 1st serve | Now | Frances wins | v Karue | Matchup | Optimal |
|---|---|---|---|---|---|
| Wide | 50% | 72% | 72% | 70.9%±7.6 | 45% ▼ |
| Body | 8% | 63% | 56% | 56.6%±11.7 | 0% ▼ |
| T | 42% | 79% | 77% | 80.6%±7.6 | 55% ▲ |
Optimal v Karue Sell: +0.6±0.8 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving T every time would read +6.7 per 100 first serves in before the returner adjusts.
Ad court
| 1st serve | Now | Frances wins | v Karue | Matchup | Optimal |
|---|---|---|---|---|---|
| Wide | 40% | 76% | 65% | 68.9%±8.9 | 53% ▲ |
| Body | 10% | 60% | 65% | 62.3%±13.0 | 0% ▼ |
| T | 51% | 70% | 62% | 59.1%±8.9 | 47% ▼ |
Optimal v Karue Sell: +0.4±0.9 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving wide every time would read +5.6 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.
Karue Sell returning
1st serve to the forehand
| Return | Now | Tour | Own | v Frances | Value |
|---|---|---|---|---|---|
| FH through the middle | 53% | +4.3 | −0.5 | +2.3 | +6.1±2.5 |
| FH down the line | 26% | +1.7 | −0.8 | −1.7 | −0.7±4.1 |
| FH crosscourt | 22% | +5.5 | +0.9 | −0.9 | +5.5±4.0 |
Lean FH through the middle: +1.9±1.8 per 100 returns v the current mix (120 returns charted)
1st serve to the backhand
| Return | Now | Tour | Own | v Frances | Value |
|---|---|---|---|---|---|
| BH through the middle | 41% | +6.4 | −2.0 | −0.3 | +4.1±2.5 |
| BH crosscourt | 31% | +8.8 | −0.1 | −3.0 | +5.8±3.4 |
| BH down the line | 14% | +4.2 | −0.2 | −4.2 | −0.1±4.1 |
| BH slice through the middle | 8% | −4.2 | −0.4 | −2.1 | −6.6±2.0 |
| BH slice crosscourt | 6% | +0.5 | −1.7 | −0.2 | −1.3±2.5 |
Lean BH crosscourt: +2.9±2.6 per 100 returns v the current mix (86 returns charted)
2nd serve to the backhand
| Return | Now | Tour | Own | v Frances | Value |
|---|---|---|---|---|---|
| BH through the middle | 47% | −2.9 | −1.0 | +1.9 | −2.0±2.1 |
| BH crosscourt | 35% | +1.0 | −0.8 | +0.8 | +1.1±2.7 |
| BH down the line | 18% | −0.2 | −2.1 | −1.3 | −3.7±4.1 |
Lean BH crosscourt: +2.3±2.1 per 100 returns v the current mix (68 returns charted)
Frances Tiafoe returning
1st serve to the forehand
| Return | Now | Tour | Own | v Karue | Value |
|---|---|---|---|---|---|
| FH through the middle | 43% | +4.3 | −0.1 | −0.3 | +3.9±2.6 |
| FH crosscourt | 21% | +5.5 | −1.6 | −0.6 | +3.3±4.0 |
| FH down the line | 19% | +1.7 | −1.6 | +0.2 | +0.2±4.1 |
| FH slice through the middle | 12% | −4.2 | −0.1 | −1.5 | −5.8±2.1 |
| FH slice down the line | 3% | −4.3 | +0.7 | ±0.0 | −3.5±2.1 |
Lean FH through the middle: +2.4±1.9 per 100 returns v the current mix (816 returns charted)
1st serve to the backhand
| Return | Now | Tour | Own | v Karue | Value |
|---|---|---|---|---|---|
| BH through the middle | 44% | +6.4 | −0.1 | +0.8 | +7.1±2.5 |
| BH crosscourt | 27% | +8.8 | +1.2 | −0.6 | +9.4±3.2 |
| BH down the line | 10% | +4.2 | −1.0 | −1.6 | +1.6±4.4 |
| BH slice through the middle | 9% | −4.2 | −0.9 | −0.5 | −5.6±2.1 |
| BH slice crosscourt | 7% | +0.5 | −2.9 | ±0.0 | −2.4±2.2 |
Lean BH crosscourt: +4.8±2.6 per 100 returns v the current mix (714 returns charted)
2nd serve to the forehand
| Return | Now | Tour | Own | v Karue | Value |
|---|---|---|---|---|---|
| FH through the middle | 50% | −3.5 | −1.6 | −0.9 | −6.0±2.8 |
| FH crosscourt | 25% | −0.2 | −1.3 | −1.9 | −3.4±4.1 |
| FH down the line | 23% | −1.8 | −1.4 | −1.1 | −4.3±4.5 |
| FH slice through the middle | 3% | −12.7 | +0.3 | ±0.0 | −12.4±1.1 |
Lean FH crosscourt: +1.7±3.5 per 100 returns v the current mix (225 returns charted, inside the 90% margin)
2nd serve to the backhand
| Return | Now | Tour | Own | v Karue | Value |
|---|---|---|---|---|---|
| BH crosscourt | 49% | +1.0 | +1.6 | −0.2 | +2.4±2.9 |
| BH through the middle | 38% | −2.9 | −1.2 | −0.4 | −4.5±2.4 |
| BH down the line | 12% | −0.2 | +1.6 | +0.2 | +1.6±4.4 |
| BH slice through the middle | 1% | −11.3 | −0.2 | ±0.0 | −11.5±1.0 |
Lean BH crosscourt: +2.9±1.8 per 100 returns v the current mix (471 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.
Karue Sell
Favour
| Shot | Edge | Own | Theirs |
|---|---|---|---|
| FH to their forehand · return +1 | +6.2±5.3 | +2.8 | +3.4 |
| FH to the middle · return | +3.9±3.2 | +1.3 | +2.6 |
| BH to their backhand · return +1 | +2.9±4.2 | +1.2 | +1.7 |
| FH to the middle · rally | +2.3±2.9 | +2.2 | +0.1 |
| FH to their backhand · rally | +2.1±3.7 | +1.3 | +0.8 |
| FH to their forehand · serve +1 | +1.7±4.9 | −1.0 | +2.8 |
Avoid
| Shot | Edge | Own | Theirs |
|---|---|---|---|
| BH to their backhand · return | −2.4±3.9 | −0.3 | −2.1 |
| BH to the middle · return | −1.6±3.0 | −1.9 | +0.2 |
| FH to their forehand · return | −1.0±5.7 | −0.1 | −1.0 |
| BH to their backhand · serve +1 | −0.2±4.0 | +0.7 | −0.9 |
| FH to their backhand · serve +1 | +0.3±4.4 | −3.2 | +3.5 |
Frances Tiafoe
Favour
| Shot | Edge | Own | Theirs |
|---|---|---|---|
| BH to their backhand · serve +1 | +3.1±4.0 | +0.1 | +2.9 |
| BH to their backhand · rally | +2.2±2.9 | +1.1 | +1.1 |
| FH to their backhand · rally | +1.1±3.8 | −0.7 | +1.8 |
| BH to the middle · rally | +0.8±2.6 | +0.3 | +0.5 |
| BH to their backhand · return | +0.3±3.9 | +0.8 | −0.5 |
| BH slice to their backhand · rally | +0.2±2.4 | −0.3 | +0.5 |
Avoid
| Shot | Edge | Own | Theirs |
|---|---|---|---|
| BH to their forehand · rally | −3.0±5.2 | −1.0 | −2.0 |
| FH to their forehand · return +1 | −2.9±5.4 | −0.8 | −2.1 |
| FH to their forehand · rally | −1.9±3.5 | −2.0 | +0.1 |
| FH to the middle · return | −1.6±3.2 | −0.2 | −1.4 |
| FH to their forehand · serve +1 | −1.3±4.8 | +0.9 | −2.3 |
Against Frances Tiafoe-like opponents
| Karue Sell v | Matches | Serve pts won | Return pts won |
|---|---|---|---|
| All charted opponents | – | 63.1% | 42.3% |
Similar by tactical fingerprint: Alexander Shevchenko, Alexandre Muller, Roman Safiullin, Fabio Fognini, Matteo Arnaldi, Otto Virtanen, Lucas Pouille, Gregoire Barrere, Marcos Baghdatis, Tomas Berdych. When two players have rarely met, their records against these lookalikes fill the gap.