| Ittum vs King | 22–15 | 59.46% |
| Ittum vs Law | 13–11 | 54.17% |
| Ittum vs Jin | 11–12 | 47.83% |
| Ittum vs Steve | 9–10 | 47.37% |
| Ittum vs Hwoarang | 8–8 | 50.00% |
| Ittum vs Victor | 8–7 | 53.33% |
| Ittum vs Eddy | 5–6 | 45.45% |
| Ittum vs Lili | 4–6 | 40.00% |
| Ittum vs Lidia | 2–8 | 20.00% |
| Ittum vs Kazuya | 5–3 | 62.50% |
| Ittum vs Lars | 6–2 | 75.00% |
| Ittum vs Paul | 1–6 | 14.29% |
| Ittum vs Jack-8 | 4–3 | 57.14% |
| Ittum vs Nina | 5–2 | 71.43% |
| Ittum vs Heihachi | 4–2 | 66.67% |
| Ittum vs Armor King | 3–3 | 50.00% |
| Ittum vs Yoshimitsu | 2–3 | 40.00% |
| Ittum vs Bryan | 0–5 | 0.00% |
| Ittum vs Dragunov | 2–3 | 40.00% |
| Ittum vs Kuma | 1–4 | 20.00% |
| Ittum vs Jun | 4–1 | 80.00% |
| Ittum vs Reina | 3–2 | 60.00% |
| Ittum vs Clive | 4–1 | 80.00% |
| Ittum vs Miary Zo | 1–4 | 20.00% |
| Ittum vs Asuka | 1–3 | 25.00% |
| Ittum vs Alisa | 2–1 | 66.67% |
| Ittum vs Azucena | 2–1 | 66.67% |
| Ittum vs Fahkumram | 2–1 | 66.67% |
| Ittum vs Leroy | 0–2 | 0.00% |
| Ittum vs Devil Jin | 0–1 | 0.00% |
| Ittum vs Feng | 0–1 | 0.00% |
| Ittum vs Raven | 1–0 | 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.