| Iosphyke vs Eddy | 9–11 | 45.00% |
| Iosphyke vs King | 7–12 | 36.84% |
| Iosphyke vs Bryan | 9–9 | 50.00% |
| Iosphyke vs Devil Jin | 7–10 | 41.18% |
| Iosphyke vs Kazuya | 6–9 | 40.00% |
| Iosphyke vs Dragunov | 7–6 | 53.85% |
| Iosphyke vs Paul | 10–1 | 90.91% |
| Iosphyke vs Leroy | 7–4 | 63.64% |
| Iosphyke vs Reina | 5–6 | 45.45% |
| Iosphyke vs Steve | 8–2 | 80.00% |
| Iosphyke vs Asuka | 4–6 | 40.00% |
| Iosphyke vs Lili | 4–6 | 40.00% |
| Iosphyke vs Law | 2–7 | 22.22% |
| Iosphyke vs Hwoarang | 4–4 | 50.00% |
| Iosphyke vs Lidia | 2–6 | 25.00% |
| Iosphyke vs Xiaoyu | 4–2 | 66.67% |
| Iosphyke vs Lee | 2–4 | 33.33% |
| Iosphyke vs Jun | 3–3 | 50.00% |
| Iosphyke vs Jack-8 | 2–3 | 40.00% |
| Iosphyke vs Lars | 3–2 | 60.00% |
| Iosphyke vs Nina | 3–2 | 60.00% |
| Iosphyke vs Raven | 2–3 | 40.00% |
| Iosphyke vs Alisa | 3–1 | 75.00% |
| Iosphyke vs Zafina | 0–4 | 0.00% |
| Iosphyke vs Leo | 1–2 | 33.33% |
| Iosphyke vs Yoshimitsu | 2–0 | 100.00% |
| Iosphyke vs Jin | 2–0 | 100.00% |
| Iosphyke vs Feng | 2–0 | 100.00% |
| Iosphyke vs Victor | 1–1 | 50.00% |
| Iosphyke vs Heihachi | 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.