| John Reina vs Reina | 6–7 | 46.15% |
| John Reina vs Kazuya | 5–5 | 50.00% |
| John Reina vs King | 3–6 | 33.33% |
| John Reina vs Yoshimitsu | 2–7 | 22.22% |
| John Reina vs Lili | 5–3 | 62.50% |
| John Reina vs Hwoarang | 3–4 | 42.86% |
| John Reina vs Heihachi | 6–1 | 85.71% |
| John Reina vs Bryan | 2–4 | 33.33% |
| John Reina vs Azucena | 4–2 | 66.67% |
| John Reina vs Raven | 4–2 | 66.67% |
| John Reina vs Law | 2–3 | 40.00% |
| John Reina vs Steve | 1–4 | 20.00% |
| John Reina vs Jin | 1–3 | 25.00% |
| John Reina vs Paul | 1–2 | 33.33% |
| John Reina vs Alisa | 1–2 | 33.33% |
| John Reina vs Claudio | 2–1 | 66.67% |
| John Reina vs Kuma | 1–2 | 33.33% |
| John Reina vs Jack-8 | 0–2 | 0.00% |
| John Reina vs Nina | 0–2 | 0.00% |
| John Reina vs Eddy | 0–2 | 0.00% |
| John Reina vs Lidia | 0–2 | 0.00% |
| John Reina vs Anna | 0–2 | 0.00% |
| John Reina vs Lars | 0–1 | 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.