| MahiKoi vs Kazuya | 39–29 | 57.35% |
| MahiKoi vs Reina | 35–26 | 57.38% |
| MahiKoi vs King | 39–18 | 68.42% |
| MahiKoi vs Lee | 29–27 | 51.79% |
| MahiKoi vs Bryan | 34–16 | 68.00% |
| MahiKoi vs Steve | 23–27 | 46.00% |
| MahiKoi vs Yoshimitsu | 21–27 | 43.75% |
| MahiKoi vs Jin | 25–21 | 54.35% |
| MahiKoi vs Dragunov | 15–27 | 35.71% |
| MahiKoi vs Lili | 20–20 | 50.00% |
| MahiKoi vs Azucena | 22–16 | 57.89% |
| MahiKoi vs Jun | 14–21 | 40.00% |
| MahiKoi vs Nina | 14–14 | 50.00% |
| MahiKoi vs Heihachi | 18–10 | 64.29% |
| MahiKoi vs Hwoarang | 17–10 | 62.96% |
| MahiKoi vs Law | 15–10 | 60.00% |
| MahiKoi vs Xiaoyu | 12–9 | 57.14% |
| MahiKoi vs Asuka | 13–8 | 61.90% |
| MahiKoi vs Fahkumram | 7–13 | 35.00% |
| MahiKoi vs Victor | 7–12 | 36.84% |
| MahiKoi vs Paul | 7–10 | 41.18% |
| MahiKoi vs Jack-8 | 3–14 | 17.65% |
| MahiKoi vs Devil Jin | 9–8 | 52.94% |
| MahiKoi vs Feng | 9–8 | 52.94% |
| MahiKoi vs Armor King | 10–5 | 66.67% |
| MahiKoi vs Lars | 6–8 | 42.86% |
| MahiKoi vs Raven | 7–7 | 50.00% |
| MahiKoi vs Eddy | 7–5 | 58.33% |
| MahiKoi vs Lidia | 5–7 | 41.67% |
| MahiKoi vs Alisa | 8–3 | 72.73% |
| MahiKoi vs Kuma | 2–7 | 22.22% |
| MahiKoi vs Shaheen | 4–4 | 50.00% |
| MahiKoi vs Leroy | 3–5 | 37.50% |
| MahiKoi vs Anna | 2–6 | 25.00% |
| MahiKoi vs Claudio | 1–6 | 14.29% |
| MahiKoi vs Zafina | 3–2 | 60.00% |
| MahiKoi vs Leo | 1–3 | 25.00% |
| MahiKoi vs Panda | 1–3 | 25.00% |
| MahiKoi vs Clive | 3–0 | 100.00% |
| MahiKoi vs Miary Zo | 2–1 | 66.67% |
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.