| Reiko vs King | 6–7 | 46.15% |
| Reiko vs Hwoarang | 8–2 | 80.00% |
| Reiko vs Jin | 5–4 | 55.56% |
| Reiko vs Law | 3–5 | 37.50% |
| Reiko vs Devil Jin | 4–3 | 57.14% |
| Reiko vs Armor King | 5–2 | 71.43% |
| Reiko vs Bryan | 2–4 | 33.33% |
| Reiko vs Lee | 2–4 | 33.33% |
| Reiko vs Leroy | 5–1 | 83.33% |
| Reiko vs Eddy | 6–0 | 100.00% |
| Reiko vs Asuka | 4–1 | 80.00% |
| Reiko vs Alisa | 3–2 | 60.00% |
| Reiko vs Kazuya | 3–1 | 75.00% |
| Reiko vs Dragunov | 4–0 | 100.00% |
| Reiko vs Steve | 3–0 | 100.00% |
| Reiko vs Jack-8 | 2–1 | 66.67% |
| Reiko vs Lili | 2–1 | 66.67% |
| Reiko vs Azucena | 1–2 | 33.33% |
| Reiko vs Lidia | 2–1 | 66.67% |
| Reiko vs Heihachi | 1–2 | 33.33% |
| Reiko vs Clive | 1–2 | 33.33% |
| Reiko vs Paul | 0–2 | 0.00% |
| Reiko vs Feng | 2–0 | 100.00% |
| Reiko vs Lars | 2–0 | 100.00% |
| Reiko vs Claudio | 0–2 | 0.00% |
| Reiko vs Zafina | 0–2 | 0.00% |
| Reiko vs Reina | 2–0 | 100.00% |
| Reiko vs Victor | 2–0 | 100.00% |
| Reiko vs Anna | 2–0 | 100.00% |
| Reiko vs Nina | 1–0 | 100.00% |
| Reiko vs Jun | 0–1 | 0.00% |
| Reiko vs Miary Zo | 1–0 | 100.00% |
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.