| Mamaki Nakama vs Reina | 61–45 | 57.55% |
| Mamaki Nakama vs Kazuya | 47–33 | 58.75% |
| Mamaki Nakama vs Bryan | 41–36 | 53.25% |
| Mamaki Nakama vs Heihachi | 35–40 | 46.67% |
| Mamaki Nakama vs Jin | 42–32 | 56.76% |
| Mamaki Nakama vs Lili | 25–31 | 44.64% |
| Mamaki Nakama vs Dragunov | 25–28 | 47.17% |
| Mamaki Nakama vs Steve | 20–26 | 43.48% |
| Mamaki Nakama vs Hwoarang | 29–14 | 67.44% |
| Mamaki Nakama vs King | 21–21 | 50.00% |
| Mamaki Nakama vs Devil Jin | 21–18 | 53.85% |
| Mamaki Nakama vs Alisa | 19–19 | 50.00% |
| Mamaki Nakama vs Asuka | 20–17 | 54.05% |
| Mamaki Nakama vs Azucena | 25–12 | 67.57% |
| Mamaki Nakama vs Eddy | 18–14 | 56.25% |
| Mamaki Nakama vs Law | 14–16 | 46.67% |
| Mamaki Nakama vs Feng | 11–15 | 42.31% |
| Mamaki Nakama vs Jun | 14–12 | 53.85% |
| Mamaki Nakama vs Claudio | 11–14 | 44.00% |
| Mamaki Nakama vs Lee | 12–12 | 50.00% |
| Mamaki Nakama vs Paul | 11–10 | 52.38% |
| Mamaki Nakama vs Victor | 9–12 | 42.86% |
| Mamaki Nakama vs Leroy | 7–12 | 36.84% |
| Mamaki Nakama vs Leo | 10–8 | 55.56% |
| Mamaki Nakama vs Raven | 8–9 | 47.06% |
| Mamaki Nakama vs Kuma | 6–9 | 40.00% |
| Mamaki Nakama vs Xiaoyu | 3–10 | 23.08% |
| Mamaki Nakama vs Jack-8 | 5–8 | 38.46% |
| Mamaki Nakama vs Yoshimitsu | 6–6 | 50.00% |
| Mamaki Nakama vs Lars | 5–7 | 41.67% |
| Mamaki Nakama vs Shaheen | 5–7 | 41.67% |
| Mamaki Nakama vs Nina | 6–6 | 50.00% |
| Mamaki Nakama vs Lidia | 7–5 | 58.33% |
| Mamaki Nakama vs Zafina | 2–9 | 18.18% |
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.