| Fireskull vs King | 11–4 | 73.33% |
| Fireskull vs Kazuya | 6–8 | 42.86% |
| Fireskull vs Steve | 5–9 | 35.71% |
| Fireskull vs Reina | 5–9 | 35.71% |
| Fireskull vs Dragunov | 7–6 | 53.85% |
| Fireskull vs Jin | 2–10 | 16.67% |
| Fireskull vs Law | 5–5 | 50.00% |
| Fireskull vs Asuka | 6–4 | 60.00% |
| Fireskull vs Lili | 5–4 | 55.56% |
| Fireskull vs Heihachi | 4–4 | 50.00% |
| Fireskull vs Devil Jin | 3–4 | 42.86% |
| Fireskull vs Eddy | 5–2 | 71.43% |
| Fireskull vs Nina | 3–3 | 50.00% |
| Fireskull vs Feng | 1–4 | 20.00% |
| Fireskull vs Lee | 4–1 | 80.00% |
| Fireskull vs Xiaoyu | 4–0 | 100.00% |
| Fireskull vs Leroy | 4–0 | 100.00% |
| Fireskull vs Paul | 3–0 | 100.00% |
| Fireskull vs Lars | 2–1 | 66.67% |
| Fireskull vs Alisa | 3–0 | 100.00% |
| Fireskull vs Jun | 2–1 | 66.67% |
| Fireskull vs Azucena | 3–0 | 100.00% |
| Fireskull vs Raven | 2–1 | 66.67% |
| Fireskull vs Yoshimitsu | 0–2 | 0.00% |
| Fireskull vs Hwoarang | 0–2 | 0.00% |
| Fireskull vs Bryan | 1–1 | 50.00% |
| Fireskull vs Leo | 0–2 | 0.00% |
| Fireskull vs Zafina | 2–0 | 100.00% |
| Fireskull vs Lidia | 1–1 | 50.00% |
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.