| Mushroom vs King | 31–40 | 43.66% |
| Mushroom vs Law | 24–42 | 36.36% |
| Mushroom vs Steve | 28–26 | 51.85% |
| Mushroom vs Kazuya | 14–24 | 36.84% |
| Mushroom vs Jin | 19–16 | 54.29% |
| Mushroom vs Hwoarang | 15–15 | 50.00% |
| Mushroom vs Bryan | 13–13 | 50.00% |
| Mushroom vs Dragunov | 11–15 | 42.31% |
| Mushroom vs Eddy | 11–15 | 42.31% |
| Mushroom vs Heihachi | 8–16 | 33.33% |
| Mushroom vs Paul | 13–8 | 61.90% |
| Mushroom vs Victor | 10–9 | 52.63% |
| Mushroom vs Devil Jin | 6–10 | 37.50% |
| Mushroom vs Nina | 5–10 | 33.33% |
| Mushroom vs Asuka | 6–7 | 46.15% |
| Mushroom vs Lili | 9–4 | 69.23% |
| Mushroom vs Yoshimitsu | 3–9 | 25.00% |
| Mushroom vs Armor King | 3–9 | 25.00% |
| Mushroom vs Alisa | 3–8 | 27.27% |
| Mushroom vs Reina | 5–6 | 45.45% |
| Mushroom vs Clive | 2–9 | 18.18% |
| Mushroom vs Leo | 1–8 | 11.11% |
| Mushroom vs Lars | 5–3 | 62.50% |
| Mushroom vs Jun | 4–4 | 50.00% |
| Mushroom vs Fahkumram | 2–6 | 25.00% |
| Mushroom vs Claudio | 3–4 | 42.86% |
| Mushroom vs Kuma | 3–4 | 42.86% |
| Mushroom vs Azucena | 4–3 | 57.14% |
| Mushroom vs Lee | 2–4 | 33.33% |
| Mushroom vs Anna | 2–4 | 33.33% |
| Mushroom vs Shaheen | 1–4 | 20.00% |
| Mushroom vs Leroy | 0–4 | 0.00% |
| Mushroom vs Jack-8 | 3–0 | 100.00% |
| Mushroom vs Zafina | 2–1 | 66.67% |
| Mushroom vs Xiaoyu | 0–2 | 0.00% |
| Mushroom vs Lidia | 0–2 | 0.00% |
| Mushroom vs Miary Zo | 0–2 | 0.00% |
| Mushroom vs Panda | 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.