| Iyatechi vs Kazuya | 3–8 | 27.27% |
| Iyatechi vs Hwoarang | 7–3 | 70.00% |
| Iyatechi vs Steve | 1–8 | 11.11% |
| Iyatechi vs Leroy | 5–3 | 62.50% |
| Iyatechi vs Jun | 5–3 | 62.50% |
| Iyatechi vs Azucena | 2–6 | 25.00% |
| Iyatechi vs King | 2–4 | 33.33% |
| Iyatechi vs Lili | 0–6 | 0.00% |
| Iyatechi vs Alisa | 3–3 | 50.00% |
| Iyatechi vs Reina | 4–2 | 66.67% |
| Iyatechi vs Law | 1–4 | 20.00% |
| Iyatechi vs Lars | 2–3 | 40.00% |
| Iyatechi vs Bryan | 3–1 | 75.00% |
| Iyatechi vs Nina | 3–1 | 75.00% |
| Iyatechi vs Paul | 0–3 | 0.00% |
| Iyatechi vs Jin | 1–2 | 33.33% |
| Iyatechi vs Asuka | 1–2 | 33.33% |
| Iyatechi vs Shaheen | 2–1 | 66.67% |
| Iyatechi vs Lee | 2–1 | 66.67% |
| Iyatechi vs Eddy | 2–1 | 66.67% |
| Iyatechi vs Lidia | 2–1 | 66.67% |
| Iyatechi vs Yoshimitsu | 2–0 | 100.00% |
| Iyatechi vs Xiaoyu | 2–0 | 100.00% |
| Iyatechi vs Devil Jin | 2–0 | 100.00% |
| Iyatechi vs Feng | 0–2 | 0.00% |
| Iyatechi vs Leo | 0–2 | 0.00% |
| Iyatechi vs Claudio | 2–0 | 100.00% |
| Iyatechi vs Victor | 1–1 | 50.00% |
| Iyatechi vs Raven | 2–0 | 100.00% |
| Iyatechi vs Panda | 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.