| iakai vs Reina | 15–4 | 78.95% |
| iakai vs Eddy | 8–10 | 44.44% |
| iakai vs Jin | 5–5 | 50.00% |
| iakai vs Dragunov | 5–4 | 55.56% |
| iakai vs Paul | 2–6 | 25.00% |
| iakai vs King | 4–4 | 50.00% |
| iakai vs Bryan | 6–2 | 75.00% |
| iakai vs Kazuya | 8–0 | 100.00% |
| iakai vs Victor | 6–2 | 75.00% |
| iakai vs Yoshimitsu | 5–2 | 71.43% |
| iakai vs Hwoarang | 3–4 | 42.86% |
| iakai vs Jack-8 | 2–4 | 33.33% |
| iakai vs Zafina | 4–2 | 66.67% |
| iakai vs Jun | 5–1 | 83.33% |
| iakai vs Azucena | 3–3 | 50.00% |
| iakai vs Law | 4–1 | 80.00% |
| iakai vs Nina | 3–2 | 60.00% |
| iakai vs Xiaoyu | 0–3 | 0.00% |
| iakai vs Devil Jin | 2–1 | 66.67% |
| iakai vs Lili | 1–2 | 33.33% |
| iakai vs Asuka | 2–0 | 100.00% |
| iakai vs Feng | 2–0 | 100.00% |
| iakai vs Lee | 2–0 | 100.00% |
| iakai vs Kuma | 0–2 | 0.00% |
| iakai vs Leroy | 2–0 | 100.00% |
| iakai vs Heihachi | 0–2 | 0.00% |
| iakai vs Anna | 2–0 | 100.00% |
| iakai vs Steve | 0–1 | 0.00% |
| iakai vs Alisa | 1–0 | 100.00% |
| iakai vs Raven | 0–1 | 0.00% |
| iakai vs Armor King | 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.