| Iaito vs Jin | 29–21 | 58.00% |
| Iaito vs Steve | 27–23 | 54.00% |
| Iaito vs King | 27–18 | 60.00% |
| Iaito vs Dragunov | 17–26 | 39.53% |
| Iaito vs Kazuya | 16–24 | 40.00% |
| Iaito vs Lili | 20–16 | 55.56% |
| Iaito vs Reina | 25–9 | 73.53% |
| Iaito vs Bryan | 13–20 | 39.39% |
| Iaito vs Paul | 13–14 | 48.15% |
| Iaito vs Hwoarang | 13–14 | 48.15% |
| Iaito vs Yoshimitsu | 18–7 | 72.00% |
| Iaito vs Victor | 16–7 | 69.57% |
| Iaito vs Azucena | 13–8 | 61.90% |
| Iaito vs Heihachi | 12–9 | 57.14% |
| Iaito vs Law | 13–7 | 65.00% |
| Iaito vs Jun | 11–9 | 55.00% |
| Iaito vs Claudio | 9–10 | 47.37% |
| Iaito vs Eddy | 5–14 | 26.32% |
| Iaito vs Lidia | 9–10 | 47.37% |
| Iaito vs Leo | 9–9 | 50.00% |
| Iaito vs Nina | 10–7 | 58.82% |
| Iaito vs Jack-8 | 9–7 | 56.25% |
| Iaito vs Asuka | 12–4 | 75.00% |
| Iaito vs Devil Jin | 8–8 | 50.00% |
| Iaito vs Raven | 6–9 | 40.00% |
| Iaito vs Lee | 5–8 | 38.46% |
| Iaito vs Xiaoyu | 4–8 | 33.33% |
| Iaito vs Feng | 2–6 | 25.00% |
| Iaito vs Lars | 8–0 | 100.00% |
| Iaito vs Shaheen | 3–4 | 42.86% |
| Iaito vs Zafina | 2–5 | 28.57% |
| Iaito vs Leroy | 4–3 | 57.14% |
| Iaito vs Fahkumram | 4–3 | 57.14% |
| Iaito vs Clive | 4–2 | 66.67% |
| Iaito vs Kuma | 0–5 | 0.00% |
| Iaito vs Alisa | 1–3 | 25.00% |
| Iaito vs Panda | 4–0 | 100.00% |
| Iaito vs Armor King | 1–2 | 33.33% |
| Iaito vs Anna | 0–2 | 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.