| Mareep vs Jin | 2–15 | 11.76% |
| Mareep vs Reina | 7–10 | 41.18% |
| Mareep vs Steve | 7–9 | 43.75% |
| Mareep vs Azucena | 9–4 | 69.23% |
| Mareep vs Jun | 2–10 | 16.67% |
| Mareep vs Claudio | 4–7 | 36.36% |
| Mareep vs Asuka | 3–7 | 30.00% |
| Mareep vs Nina | 2–8 | 20.00% |
| Mareep vs Yoshimitsu | 6–3 | 66.67% |
| Mareep vs Dragunov | 4–5 | 44.44% |
| Mareep vs Law | 3–5 | 37.50% |
| Mareep vs Feng | 2–6 | 25.00% |
| Mareep vs Kazuya | 4–3 | 57.14% |
| Mareep vs Victor | 3–4 | 42.86% |
| Mareep vs King | 2–4 | 33.33% |
| Mareep vs Devil Jin | 0–6 | 0.00% |
| Mareep vs Lili | 1–5 | 16.67% |
| Mareep vs Kuma | 0–6 | 0.00% |
| Mareep vs Xiaoyu | 2–3 | 40.00% |
| Mareep vs Bryan | 1–4 | 20.00% |
| Mareep vs Eddy | 2–3 | 40.00% |
| Mareep vs Hwoarang | 0–4 | 0.00% |
| Mareep vs Lars | 3–1 | 75.00% |
| Mareep vs Alisa | 1–3 | 25.00% |
| Mareep vs Raven | 2–2 | 50.00% |
| Mareep vs Paul | 2–1 | 66.67% |
| Mareep vs Jack-8 | 2–0 | 100.00% |
| Mareep vs Leo | 2–0 | 100.00% |
| Mareep vs Lee | 0–2 | 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.