| Mr. Mediocre vs King | 35–22 | 61.40% |
| Mr. Mediocre vs Jin | 36–17 | 67.92% |
| Mr. Mediocre vs Kazuya | 30–19 | 61.22% |
| Mr. Mediocre vs Hwoarang | 33–15 | 68.75% |
| Mr. Mediocre vs Law | 21–17 | 55.26% |
| Mr. Mediocre vs Reina | 19–19 | 50.00% |
| Mr. Mediocre vs Bryan | 22–13 | 62.86% |
| Mr. Mediocre vs Lars | 21–10 | 67.74% |
| Mr. Mediocre vs Yoshimitsu | 20–10 | 66.67% |
| Mr. Mediocre vs Heihachi | 17–12 | 58.62% |
| Mr. Mediocre vs Leo | 21–7 | 75.00% |
| Mr. Mediocre vs Feng | 16–11 | 59.26% |
| Mr. Mediocre vs Lee | 14–12 | 53.85% |
| Mr. Mediocre vs Armor King | 13–13 | 50.00% |
| Mr. Mediocre vs Steve | 17–8 | 68.00% |
| Mr. Mediocre vs Asuka | 15–10 | 60.00% |
| Mr. Mediocre vs Lili | 15–9 | 62.50% |
| Mr. Mediocre vs Eddy | 9–15 | 37.50% |
| Mr. Mediocre vs Victor | 13–10 | 56.52% |
| Mr. Mediocre vs Fahkumram | 14–7 | 66.67% |
| Mr. Mediocre vs Devil Jin | 12–7 | 63.16% |
| Mr. Mediocre vs Azucena | 10–9 | 52.63% |
| Mr. Mediocre vs Paul | 11–5 | 68.75% |
| Mr. Mediocre vs Xiaoyu | 10–5 | 66.67% |
| Mr. Mediocre vs Nina | 12–3 | 80.00% |
| Mr. Mediocre vs Jun | 10–4 | 71.43% |
| Mr. Mediocre vs Dragunov | 8–5 | 61.54% |
| Mr. Mediocre vs Raven | 11–2 | 84.62% |
| Mr. Mediocre vs Clive | 9–4 | 69.23% |
| Mr. Mediocre vs Jack-8 | 5–6 | 45.45% |
| Mr. Mediocre vs Leroy | 4–6 | 40.00% |
| Mr. Mediocre vs Kuma | 4–5 | 44.44% |
| Mr. Mediocre vs Alisa | 5–3 | 62.50% |
| Mr. Mediocre vs Shaheen | 4–4 | 50.00% |
| Mr. Mediocre vs Lidia | 3–5 | 37.50% |
| Mr. Mediocre vs Claudio | 5–1 | 83.33% |
| Mr. Mediocre vs Zafina | 3–2 | 60.00% |
| Mr. Mediocre vs Anna | 1–3 | 25.00% |
| Mr. Mediocre vs Panda | 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.