| Reiko vs Jin | 31–30 | 50.82% |
| Reiko vs Steve | 37–22 | 62.71% |
| Reiko vs Lili | 23–23 | 50.00% |
| Reiko vs King | 24–21 | 53.33% |
| Reiko vs Reina | 26–12 | 68.42% |
| Reiko vs Kazuya | 10–23 | 30.30% |
| Reiko vs Clive | 16–16 | 50.00% |
| Reiko vs Victor | 18–12 | 60.00% |
| Reiko vs Dragunov | 12–16 | 42.86% |
| Reiko vs Law | 12–12 | 50.00% |
| Reiko vs Bryan | 9–13 | 40.91% |
| Reiko vs Heihachi | 7–12 | 36.84% |
| Reiko vs Lars | 5–10 | 33.33% |
| Reiko vs Jun | 8–7 | 53.33% |
| Reiko vs Yoshimitsu | 5–9 | 35.71% |
| Reiko vs Asuka | 6–8 | 42.86% |
| Reiko vs Leo | 6–8 | 42.86% |
| Reiko vs Azucena | 8–4 | 66.67% |
| Reiko vs Lidia | 1–10 | 9.09% |
| Reiko vs Paul | 2–8 | 20.00% |
| Reiko vs Devil Jin | 2–8 | 20.00% |
| Reiko vs Xiaoyu | 3–6 | 33.33% |
| Reiko vs Jack-8 | 6–3 | 66.67% |
| Reiko vs Kuma | 4–5 | 44.44% |
| Reiko vs Panda | 4–5 | 44.44% |
| Reiko vs Eddy | 4–5 | 44.44% |
| Reiko vs Hwoarang | 6–1 | 85.71% |
| Reiko vs Nina | 6–1 | 85.71% |
| Reiko vs Claudio | 5–1 | 83.33% |
| Reiko vs Anna | 3–3 | 50.00% |
| Reiko vs Feng | 3–2 | 60.00% |
| Reiko vs Alisa | 4–1 | 80.00% |
| Reiko vs Leroy | 3–2 | 60.00% |
| Reiko vs Fahkumram | 1–3 | 25.00% |
| Reiko vs Lee | 2–1 | 66.67% |
| Reiko vs Zafina | 1–2 | 33.33% |
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.