Game plan
Marcelo Rios v Petr Korda
Every number combines what Marcelo Rios does well with what Petr Korda 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 At least one of them is no longer active or has too little charted in the last three seasons, so both are compared on their careers.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 Marcelo Rios's record against Petr Korda's tactical lookalikes and in their charted head-to-heads (lookalikes: −9.5 on serve, −12.0 on return vs expectation (83 points); head-to-head: −17.2 on serve, −4.3 on return vs expectation (148 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
| Career | Marcelo | Petr |
|---|---|---|
| Direction choice | +0.13 ±0.05 better than 87% | +0.06 ±0.08 better than 72% |
| Shot selection | −0.23 ±0.19 better than 28% | −0.66 ±0.14 better than 6% |
| Execution | −0.40 ±0.62 better than 48% | −0.78 ±0.45 better than 34% |
| Points left on the table | 2.60 ±0.15 lower than 50% | 3.32 ±0.11 lower than 10% |
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.
Marcelo Rios serving
Deuce court
| 1st serve | Now | Marcelo wins | v Petr | Matchup | Optimal |
|---|---|---|---|---|---|
| Wide | 46% | 67% | 73% | 67.9%±5.8 | 39% ▼ |
| Body | 6% | 65% | 60% | 61.6%±12.9 | 0% ▼ |
| T | 48% | 72% | 81% | 77.9%±5.6 | 61% ▲ |
Optimal v Petr Korda: +0.6±0.7 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving T every time would read +5.6 per 100 first serves in before the returner adjusts.
Ad court
| 1st serve | Now | Marcelo wins | v Petr | Matchup | Optimal |
|---|---|---|---|---|---|
| Wide | 62% | 70% | 73% | 70.1%±5.7 | 57% ▼ |
| Body | 8% | 65% | 65% | 67.1%±12.2 | 0% ▼ |
| T | 30% | 75% | 75% | 77.7%±6.1 | 43% ▲ |
Optimal v Petr Korda: +0.5±0.7 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving T every time would read +5.6 per 100 first serves in before the returner adjusts.
Petr Korda serving
Deuce court
| 1st serve | Now | Petr wins | v Marcelo | Matchup | Optimal |
|---|---|---|---|---|---|
| Wide | 37% | 75% | 68% | 70.6%±5.9 | 47% ▲ |
| Body | 11% | 60% | 66% | 62.3%±10.7 | 0% ▼ |
| T | 52% | 73% | 75% | 72.9%±6.0 | 53% ▲ |
Optimal v Marcelo Rios: +0.5±0.7 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving T every time would read +2.0 per 100 first serves in before the returner adjusts.
Ad court
| 1st serve | Now | Petr wins | v Marcelo | Matchup | Optimal |
|---|---|---|---|---|---|
| Wide | 63% | 69% | 72% | 68.7%±6.0 | 59% ▼ |
| Body | 10% | 66% | 66% | 68.3%±10.0 | 0% ▼ |
| T | 28% | 72% | 69% | 68.8%±7.3 | 41% ▲ |
Optimal v Marcelo Rios: +0.2±0.8 per 100 first serves (faults included) over the current mix, inside the 90% margin. Serving T every time would read +0.1 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.
Marcelo Rios returning
1st serve to the forehand
| Return | Now | Tour | Own | v Petr | Value |
|---|---|---|---|---|---|
| FH through the middle | 45% | +4.3 | −2.6 | −1.0 | +0.6±2.6 |
| FH crosscourt | 30% | +5.5 | −0.1 | −5.1 | +0.3±4.3 |
| FH down the line | 21% | +1.7 | −3.6 | +1.4 | −0.5±4.3 |
| FH slice through the middle | 2% | −4.2 | +0.1 | −1.0 | −5.1±1.8 |
| FH slice crosscourt | 2% | −4.3 | +0.6 | −0.7 | −4.4±1.7 |
Lean FH through the middle: +0.5±2.1 per 100 returns v the current mix (327 returns charted, inside the 90% margin)
1st serve to the backhand
| Return | Now | Tour | Own | v Petr | Value |
|---|---|---|---|---|---|
| BH through the middle | 33% | +6.4 | −2.5 | −0.7 | +3.2±2.2 |
| BH down the line | 20% | +4.2 | +0.1 | +3.3 | +7.6±4.4 |
| BH crosscourt | 20% | +8.8 | −2.5 | −2.8 | +3.5±3.3 |
| BH slice through the middle | 15% | −4.2 | +0.4 | +2.4 | −1.4±2.3 |
| BH slice down the line | 7% | −8.4 | +1.0 | +5.2 | −2.2±3.5 |
Lean BH down the line: +4.7±3.7 per 100 returns v the current mix (493 returns charted)
2nd serve to the forehand
| Return | Now | Tour | Own | v Petr | Value |
|---|---|---|---|---|---|
| FH crosscourt | 50% | −0.2 | +1.1 | −4.5 | −3.6±4.3 |
| FH through the middle | 35% | −3.5 | −0.6 | −0.3 | −4.3±2.8 |
| FH down the line | 15% | −1.8 | −0.3 | −0.6 | −2.7±4.5 |
Lean FH down the line: +1.0±4.5 per 100 returns v the current mix (147 returns charted, inside the 90% margin)
2nd serve to the backhand
| Return | Now | Tour | Own | v Petr | Value |
|---|---|---|---|---|---|
| BH through the middle | 33% | −2.9 | +1.2 | +1.0 | −0.7±2.2 |
| BH down the line | 32% | −0.2 | +1.8 | −0.4 | +1.2±4.6 |
| BH crosscourt | 26% | +1.0 | +1.3 | −2.5 | −0.2±3.1 |
| FH inside-in | 2% | +0.6 | +0.9 | −4.5 | −3.0±3.7 |
| FH inside-out | 2% | +1.0 | +1.1 | −0.6 | +1.5±3.1 |
Lean BH down the line: +1.3±3.3 per 100 returns v the current mix (356 returns charted, inside the 90% margin)
Petr Korda returning
1st serve to the forehand
| Return | Now | Tour | Own | v Marcelo | Value |
|---|---|---|---|---|---|
| FH through the middle | 43% | +4.3 | −1.4 | −1.0 | +1.8±2.7 |
| FH crosscourt | 35% | +5.5 | +2.2 | −1.3 | +6.4±4.2 |
| FH down the line | 23% | +1.7 | −2.3 | +1.5 | +0.8±4.3 |
Lean FH crosscourt: +3.2±3.1 per 100 returns v the current mix (376 returns charted)
1st serve to the backhand
| Return | Now | Tour | Own | v Marcelo | Value |
|---|---|---|---|---|---|
| BH through the middle | 27% | +6.4 | −4.7 | −1.2 | +0.5±2.3 |
| BH down the line | 22% | +4.2 | −1.6 | −0.3 | +2.3±4.2 |
| BH slice through the middle | 18% | −4.2 | −0.2 | +2.0 | −2.4±2.3 |
| BH slice down the line | 12% | −8.4 | −2.2 | +1.9 | −8.7±3.4 |
| BH crosscourt | 11% | +8.8 | −0.4 | −2.5 | +5.9±3.6 |
Lean BH crosscourt: +6.2±3.4 per 100 returns v the current mix (661 returns charted)
2nd serve to the forehand
| Return | Now | Tour | Own | v Marcelo | Value |
|---|---|---|---|---|---|
| FH crosscourt | 44% | −0.2 | +1.5 | −5.3 | −4.0±4.4 |
| FH through the middle | 34% | −3.5 | −2.8 | −0.2 | −6.4±2.7 |
| FH down the line | 22% | −1.8 | +1.7 | ±0.0 | ±0.0±4.4 |
Lean FH down the line: +3.9±4.0 per 100 returns v the current mix (187 returns charted, inside the 90% margin)
2nd serve to the backhand
| Return | Now | Tour | Own | v Marcelo | Value |
|---|---|---|---|---|---|
| BH through the middle | 33% | −2.9 | −2.4 | +0.9 | −4.4±2.2 |
| BH down the line | 24% | −0.2 | +2.2 | −0.2 | +1.8±4.6 |
| BH crosscourt | 19% | +1.0 | −2.1 | −1.5 | −2.6±3.2 |
| BH slice crosscourt | 9% | −4.0 | −0.4 | +1.1 | −3.3±2.4 |
| BH slice through the middle | 8% | −11.3 | +1.6 | +3.0 | −6.7±2.4 |
Lean BH down the line: +4.8±3.7 per 100 returns v the current mix (528 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 grass. Each player's grass record is shrunk toward their all-surface one, so a thin sample on it moves the numbers only a little.
Marcelo Rios
Favour
| Shot | Edge | Own | Theirs |
|---|---|---|---|
| BH to the middle · serve +1 | +3.5±2.5 | +2.0 | +1.5 |
| BH to their forehand · return | +3.4±4.9 | +2.7 | +0.8 |
| FH to their backhand · return | +2.0±4.5 | −0.2 | +2.2 |
| FH to the middle · serve +1 | +1.5±2.6 | +0.1 | +1.4 |
| BH to their forehand · rally | +1.4±4.2 | −0.2 | +1.6 |
| BH slice to the middle · return | +1.3±2.6 | +0.8 | +0.5 |
Avoid
| Shot | Edge | Own | Theirs |
|---|---|---|---|
| FH to their forehand · return +1 | −14.0±4.1 | −3.2 | −10.8 |
| FH to their forehand · rally | −9.5±4.0 | −1.3 | −8.1 |
| BH to their backhand · return | −9.4±3.9 | −2.0 | −7.3 |
| BH to their backhand · return +1 | −8.6±4.2 | −3.7 | −4.9 |
| FH to their forehand · return | −7.2±5.5 | ±0.0 | −7.2 |
Petr Korda
Favour
| Shot | Edge | Own | Theirs |
|---|---|---|---|
| BH slice to their forehand · return | +5.1±3.5 | +3.8 | +1.3 |
| BH slice to their forehand · rally | +4.9±3.1 | +3.0 | +1.9 |
| BH to the middle · serve +1 | +3.1±3.0 | +1.4 | +1.7 |
| BH slice to the middle · return | +2.9±2.1 | +0.3 | +2.6 |
| FH to their backhand · return | +2.4±4.0 | +2.0 | +0.4 |
| BH to their backhand · serve +1 | +1.0±2.9 | +1.2 | −0.2 |
Avoid
| Shot | Edge | Own | Theirs |
|---|---|---|---|
| BH slice to their backhand · return | −6.6±2.8 | −6.6 | ±0.0 |
| BH to their forehand · return +1 | −5.6±5.7 | −1.7 | −3.8 |
| FH to their forehand · return | −5.2±5.3 | −0.2 | −5.0 |
| FH to the middle · return | −5.0±3.0 | −3.4 | −1.6 |
| BH to the middle · return +1 | −4.7±2.5 | −4.2 | −0.6 |
Against Petr Korda-like opponents
| Marcelo Rios v | Matches | Serve pts won | Return pts won |
|---|---|---|---|
| All charted opponents | – | 63.6% | 39.0% |
| Players most similar to Petr Korda | 1 | 55.8% | 22.6% |
| Petr Korda (charted head-to-head) | 1 | 46.5% | 32.5% |
Similar by tactical fingerprint: Joao Fonseca, Fernando Verdasco, Jo Wilfried Tsonga, Kevin King, Gilles Muller, Tommy Haas, Ivan Ljubicic, Gustavo Kuerten, Wayne Ferreira. When two players have rarely met, their records against these lookalikes fill the gap.