| Codex vs King | 19–15 | 55.88% |
| Codex vs Hwoarang | 11–23 | 32.35% |
| Codex vs Jin | 15–17 | 46.88% |
| Codex vs Kazuya | 14–14 | 50.00% |
| Codex vs Reina | 14–12 | 53.85% |
| Codex vs Eddy | 14–11 | 56.00% |
| Codex vs Bryan | 11–13 | 45.83% |
| Codex vs Lili | 8–12 | 40.00% |
| Codex vs Victor | 13–4 | 76.47% |
| Codex vs Steve | 9–5 | 64.29% |
| Codex vs Jun | 6–7 | 46.15% |
| Codex vs Dragunov | 3–9 | 25.00% |
| Codex vs Law | 3–8 | 27.27% |
| Codex vs Azucena | 5–6 | 45.45% |
| Codex vs Paul | 8–2 | 80.00% |
| Codex vs Claudio | 5–5 | 50.00% |
| Codex vs Jack-8 | 3–6 | 33.33% |
| Codex vs Devil Jin | 2–7 | 22.22% |
| Codex vs Lars | 2–7 | 22.22% |
| Codex vs Asuka | 5–3 | 62.50% |
| Codex vs Yoshimitsu | 3–4 | 42.86% |
| Codex vs Lee | 3–4 | 42.86% |
| Codex vs Zafina | 3–4 | 42.86% |
| Codex vs Raven | 2–5 | 28.57% |
| Codex vs Alisa | 3–3 | 50.00% |
| Codex vs Panda | 4–2 | 66.67% |
| Codex vs Leroy | 3–3 | 50.00% |
| Codex vs Xiaoyu | 2–3 | 40.00% |
| Codex vs Shaheen | 0–4 | 0.00% |
| Codex vs Feng | 1–2 | 33.33% |
| Codex vs Leo | 1–2 | 33.33% |
| Codex vs Nina | 2–0 | 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.