| Iaito vs Clive | 46–20 | 69.70% |
| Iaito vs Jin | 36–21 | 63.16% |
| Iaito vs Bryan | 43–14 | 75.44% |
| Iaito vs Lidia | 46–9 | 83.64% |
| Iaito vs Steve | 32–21 | 60.38% |
| Iaito vs Kazuya | 39–11 | 78.00% |
| Iaito vs Reina | 31–13 | 70.45% |
| Iaito vs Lee | 27–16 | 62.79% |
| Iaito vs King | 32–10 | 76.19% |
| Iaito vs Hwoarang | 31–8 | 79.49% |
| Iaito vs Dragunov | 27–12 | 69.23% |
| Iaito vs Jun | 28–9 | 75.68% |
| Iaito vs Heihachi | 21–14 | 60.00% |
| Iaito vs Yoshimitsu | 23–11 | 67.65% |
| Iaito vs Armor King | 21–12 | 63.64% |
| Iaito vs Lili | 23–7 | 76.67% |
| Iaito vs Law | 15–14 | 51.72% |
| Iaito vs Azucena | 23–6 | 79.31% |
| Iaito vs Victor | 19–10 | 65.52% |
| Iaito vs Lars | 23–5 | 82.14% |
| Iaito vs Paul | 18–7 | 72.00% |
| Iaito vs Feng | 19–6 | 76.00% |
| Iaito vs Devil Jin | 22–2 | 91.67% |
| Iaito vs Raven | 18–6 | 75.00% |
| Iaito vs Eddy | 14–10 | 58.33% |
| Iaito vs Leo | 15–6 | 71.43% |
| Iaito vs Claudio | 18–3 | 85.71% |
| Iaito vs Alisa | 12–7 | 63.16% |
| Iaito vs Asuka | 8–10 | 44.44% |
| Iaito vs Xiaoyu | 12–3 | 80.00% |
| Iaito vs Anna | 6–9 | 40.00% |
| Iaito vs Zafina | 10–3 | 76.92% |
| Iaito vs Jack-8 | 8–4 | 66.67% |
| Iaito vs Fahkumram | 7–4 | 63.64% |
| Iaito vs Shaheen | 9–1 | 90.00% |
| Iaito vs Nina | 8–0 | 100.00% |
| Iaito vs Kuma | 4–4 | 50.00% |
| Iaito vs Leroy | 4–2 | 66.67% |
| Iaito vs Miary Zo | 2–1 | 66.67% |
| Iaito 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.