| Rostom vs King | 24–36 | 40.00% |
| Rostom vs Jin | 20–38 | 34.48% |
| Rostom vs Kazuya | 27–18 | 60.00% |
| Rostom vs Bryan | 19–23 | 45.24% |
| Rostom vs Law | 25–16 | 60.98% |
| Rostom vs Dragunov | 16–19 | 45.71% |
| Rostom vs Hwoarang | 19–15 | 55.88% |
| Rostom vs Heihachi | 15–19 | 44.12% |
| Rostom vs Steve | 19–12 | 61.29% |
| Rostom vs Paul | 12–18 | 40.00% |
| Rostom vs Reina | 13–13 | 50.00% |
| Rostom vs Lars | 10–12 | 45.45% |
| Rostom vs Lee | 9–12 | 42.86% |
| Rostom vs Azucena | 9–12 | 42.86% |
| Rostom vs Clive | 7–12 | 36.84% |
| Rostom vs Yoshimitsu | 11–7 | 61.11% |
| Rostom vs Jun | 10–8 | 55.56% |
| Rostom vs Eddy | 3–15 | 16.67% |
| Rostom vs Lili | 2–15 | 11.76% |
| Rostom vs Feng | 7–9 | 43.75% |
| Rostom vs Anna | 6–8 | 42.86% |
| Rostom vs Devil Jin | 4–6 | 40.00% |
| Rostom vs Alisa | 5–5 | 50.00% |
| Rostom vs Nina | 5–5 | 50.00% |
| Rostom vs Jack-8 | 1–8 | 11.11% |
| Rostom vs Shaheen | 4–5 | 44.44% |
| Rostom vs Raven | 1–7 | 12.50% |
| Rostom vs Lidia | 6–2 | 75.00% |
| Rostom vs Xiaoyu | 1–6 | 14.29% |
| Rostom vs Zafina | 6–1 | 85.71% |
| Rostom vs Leroy | 4–3 | 57.14% |
| Rostom vs Claudio | 1–3 | 25.00% |
| Rostom vs Asuka | 2–1 | 66.67% |
| Rostom vs Leo | 2–1 | 66.67% |
| Rostom vs Kuma | 1–2 | 33.33% |
| Rostom vs Victor | 2–0 | 100.00% |
Limitations
This data is often requested to give insight into which characters you have more trouble with than others, but it is not particularly helpful for that. The main issue is that it is heavily skewed by how strong the opponents you play are.
For example, this data suggests my worst matchup is clearly vs Reina, but that's just because most of those games are vs Yagami.
There is a way to account for this being worked on. The central idea is to assign each matchup a rating vs you which adjusts based on the result, much like the regular rating but also based on the rating of each player. With this, it would give a better summary of how well you perform vs each character.
In the meantime, this page is here to present the data as requested.