| Illysi vs Eddy | 3–16 | 15.79% |
| Illysi vs King | 4–11 | 26.67% |
| Illysi vs Jin | 7–7 | 50.00% |
| Illysi vs Reina | 10–4 | 71.43% |
| Illysi vs Hwoarang | 2–9 | 18.18% |
| Illysi vs Alisa | 5–6 | 45.45% |
| Illysi vs Steve | 6–4 | 60.00% |
| Illysi vs Victor | 4–5 | 44.44% |
| Illysi vs Raven | 7–2 | 77.78% |
| Illysi vs Lars | 1–6 | 14.29% |
| Illysi vs Jun | 1–6 | 14.29% |
| Illysi vs Leo | 2–4 | 33.33% |
| Illysi vs Clive | 1–5 | 16.67% |
| Illysi vs Paul | 1–4 | 20.00% |
| Illysi vs Lili | 1–4 | 20.00% |
| Illysi vs Dragunov | 3–2 | 60.00% |
| Illysi vs Nina | 1–4 | 20.00% |
| Illysi vs Lidia | 1–4 | 20.00% |
| Illysi vs Kazuya | 2–2 | 50.00% |
| Illysi vs Asuka | 3–1 | 75.00% |
| Illysi vs Devil Jin | 4–0 | 100.00% |
| Illysi vs Bryan | 1–2 | 33.33% |
| Illysi vs Azucena | 0–3 | 0.00% |
| Illysi vs Yoshimitsu | 0–2 | 0.00% |
| Illysi vs Lee | 0–2 | 0.00% |
| Illysi vs Kuma | 0–2 | 0.00% |
| Illysi vs Leroy | 0–1 | 0.00% |
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.