| Lain Iwakura vs Law | 42–31 | 57.53% |
| Lain Iwakura vs King | 33–32 | 50.77% |
| Lain Iwakura vs Jin | 32–24 | 57.14% |
| Lain Iwakura vs Kazuya | 28–27 | 50.91% |
| Lain Iwakura vs Reina | 25–26 | 49.02% |
| Lain Iwakura vs Steve | 29–17 | 63.04% |
| Lain Iwakura vs Bryan | 22–23 | 48.89% |
| Lain Iwakura vs Heihachi | 22–22 | 50.00% |
| Lain Iwakura vs Hwoarang | 25–18 | 58.14% |
| Lain Iwakura vs Clive | 19–22 | 46.34% |
| Lain Iwakura vs Lili | 17–20 | 45.95% |
| Lain Iwakura vs Paul | 14–20 | 41.18% |
| Lain Iwakura vs Jun | 19–15 | 55.88% |
| Lain Iwakura vs Lars | 18–11 | 62.07% |
| Lain Iwakura vs Xiaoyu | 15–12 | 55.56% |
| Lain Iwakura vs Alisa | 18–9 | 66.67% |
| Lain Iwakura vs Asuka | 14–10 | 58.33% |
| Lain Iwakura vs Dragunov | 8–16 | 33.33% |
| Lain Iwakura vs Raven | 14–7 | 66.67% |
| Lain Iwakura vs Yoshimitsu | 9–10 | 47.37% |
| Lain Iwakura vs Nina | 13–6 | 68.42% |
| Lain Iwakura vs Kuma | 10–9 | 52.63% |
| Lain Iwakura vs Azucena | 8–11 | 42.11% |
| Lain Iwakura vs Eddy | 5–14 | 26.32% |
| Lain Iwakura vs Lidia | 9–10 | 47.37% |
| Lain Iwakura vs Claudio | 7–10 | 41.18% |
| Lain Iwakura vs Devil Jin | 11–5 | 68.75% |
| Lain Iwakura vs Victor | 8–8 | 50.00% |
| Lain Iwakura vs Lee | 6–8 | 42.86% |
| Lain Iwakura vs Leroy | 8–5 | 61.54% |
| Lain Iwakura vs Feng | 7–5 | 58.33% |
| Lain Iwakura vs Leo | 2–10 | 16.67% |
| Lain Iwakura vs Zafina | 4–2 | 66.67% |
| Lain Iwakura vs Shaheen | 3–2 | 60.00% |
| Lain Iwakura vs Jack-8 | 2–1 | 66.67% |
| Lain Iwakura vs Panda | 2–1 | 66.67% |
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.