| IROI vs Paul | 49–54 | 47.57% |
| IROI vs Bryan | 41–44 | 48.24% |
| IROI vs Kazuya | 40–40 | 50.00% |
| IROI vs Hwoarang | 35–44 | 44.30% |
| IROI vs King | 41–35 | 53.95% |
| IROI vs Jin | 38–34 | 52.78% |
| IROI vs Asuka | 36–30 | 54.55% |
| IROI vs Reina | 33–28 | 54.10% |
| IROI vs Dragunov | 31–28 | 52.54% |
| IROI vs Armor King | 21–32 | 39.62% |
| IROI vs Heihachi | 21–26 | 44.68% |
| IROI vs Fahkumram | 21–24 | 46.67% |
| IROI vs Steve | 15–28 | 34.88% |
| IROI vs Claudio | 21–22 | 48.84% |
| IROI vs Law | 18–21 | 46.15% |
| IROI vs Xiaoyu | 27–12 | 69.23% |
| IROI vs Yoshimitsu | 17–20 | 45.95% |
| IROI vs Jun | 15–21 | 41.67% |
| IROI vs Lili | 13–22 | 37.14% |
| IROI vs Nina | 18–17 | 51.43% |
| IROI vs Leroy | 25–10 | 71.43% |
| IROI vs Devil Jin | 13–18 | 41.94% |
| IROI vs Lee | 17–14 | 54.84% |
| IROI vs Victor | 14–17 | 45.16% |
| IROI vs Feng | 14–14 | 50.00% |
| IROI vs Lars | 11–16 | 40.74% |
| IROI vs Clive | 12–12 | 50.00% |
| IROI vs Lidia | 9–14 | 39.13% |
| IROI vs Leo | 8–11 | 42.11% |
| IROI vs Alisa | 9–9 | 50.00% |
| IROI vs Azucena | 14–4 | 77.78% |
| IROI vs Anna | 10–7 | 58.82% |
| IROI vs Shaheen | 4–11 | 26.67% |
| IROI vs Eddy | 5–6 | 45.45% |
| IROI vs Zafina | 6–4 | 60.00% |
| IROI vs Panda | 2–7 | 22.22% |
| IROI vs Jack-8 | 4–3 | 57.14% |
| IROI vs Miary Zo | 3–3 | 50.00% |
| IROI vs Raven | 2–2 | 50.00% |
| IROI vs Kuma | 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.