| Íomhair vs King | 19–27 | 41.30% |
| Íomhair vs Clive | 15–23 | 39.47% |
| Íomhair vs Jin | 10–17 | 37.04% |
| Íomhair vs Hwoarang | 9–13 | 40.91% |
| Íomhair vs Bryan | 5–16 | 23.81% |
| Íomhair vs Kazuya | 6–15 | 28.57% |
| Íomhair vs Dragunov | 10–9 | 52.63% |
| Íomhair vs Victor | 6–10 | 37.50% |
| Íomhair vs Law | 6–7 | 46.15% |
| Íomhair vs Lee | 4–9 | 30.77% |
| Íomhair vs Nina | 5–7 | 41.67% |
| Íomhair vs Jun | 5–6 | 45.45% |
| Íomhair vs Eddy | 5–6 | 45.45% |
| Íomhair vs Lili | 3–7 | 30.00% |
| Íomhair vs Steve | 7–2 | 77.78% |
| Íomhair vs Heihachi | 3–6 | 33.33% |
| Íomhair vs Paul | 6–2 | 75.00% |
| Íomhair vs Devil Jin | 3–5 | 37.50% |
| Íomhair vs Reina | 6–2 | 75.00% |
| Íomhair vs Xiaoyu | 1–6 | 14.29% |
| Íomhair vs Asuka | 2–5 | 28.57% |
| Íomhair vs Jack-8 | 2–4 | 33.33% |
| Íomhair vs Raven | 1–5 | 16.67% |
| Íomhair vs Lars | 4–1 | 80.00% |
| Íomhair vs Lidia | 1–4 | 20.00% |
| Íomhair vs Yoshimitsu | 1–3 | 25.00% |
| Íomhair vs Feng | 2–2 | 50.00% |
| Íomhair vs Azucena | 2–2 | 50.00% |
| Íomhair vs Leo | 0–3 | 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.