| Mossheadnedd vs King | 6–12 | 33.33% |
| Mossheadnedd vs Clive | 10–8 | 55.56% |
| Mossheadnedd vs Steve | 7–9 | 43.75% |
| Mossheadnedd vs Reina | 8–5 | 61.54% |
| Mossheadnedd vs Hwoarang | 5–6 | 45.45% |
| Mossheadnedd vs Jin | 4–6 | 40.00% |
| Mossheadnedd vs Law | 1–7 | 12.50% |
| Mossheadnedd vs Asuka | 2–5 | 28.57% |
| Mossheadnedd vs Xiaoyu | 4–2 | 66.67% |
| Mossheadnedd vs Dragunov | 3–3 | 50.00% |
| Mossheadnedd vs Kazuya | 1–4 | 20.00% |
| Mossheadnedd vs Lili | 2–3 | 40.00% |
| Mossheadnedd vs Eddy | 2–3 | 40.00% |
| Mossheadnedd vs Lidia | 2–3 | 40.00% |
| Mossheadnedd vs Heihachi | 4–1 | 80.00% |
| Mossheadnedd vs Lee | 3–1 | 75.00% |
| Mossheadnedd vs Leroy | 3–1 | 75.00% |
| Mossheadnedd vs Yoshimitsu | 1–2 | 33.33% |
| Mossheadnedd vs Devil Jin | 1–2 | 33.33% |
| Mossheadnedd vs Lars | 1–2 | 33.33% |
| Mossheadnedd vs Alisa | 1–2 | 33.33% |
| Mossheadnedd vs Nina | 2–1 | 66.67% |
| Mossheadnedd vs Jun | 3–0 | 100.00% |
| Mossheadnedd vs Azucena | 0–3 | 0.00% |
| Mossheadnedd vs Paul | 2–0 | 100.00% |
| Mossheadnedd vs Leo | 1–1 | 50.00% |
| Mossheadnedd vs Claudio | 1–1 | 50.00% |
| Mossheadnedd vs Kuma | 1–1 | 50.00% |
| Mossheadnedd vs Zafina | 0–1 | 0.00% |
| Mossheadnedd vs Victor | 1–0 | 100.00% |
| Mossheadnedd vs Raven | 0–1 | 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.