| Rey Mysterio vs Kazuya | 129–148 | 46.57% |
| Rey Mysterio vs Jin | 153–120 | 56.04% |
| Rey Mysterio vs Yoshimitsu | 127–103 | 55.22% |
| Rey Mysterio vs Bryan | 118–110 | 51.75% |
| Rey Mysterio vs King | 94–122 | 43.52% |
| Rey Mysterio vs Hwoarang | 103–101 | 50.49% |
| Rey Mysterio vs Dragunov | 99–91 | 52.11% |
| Rey Mysterio vs Law | 80–95 | 45.71% |
| Rey Mysterio vs Lee | 104–71 | 59.43% |
| Rey Mysterio vs Devil Jin | 89–76 | 53.94% |
| Rey Mysterio vs Heihachi | 80–81 | 49.69% |
| Rey Mysterio vs Lars | 70–70 | 50.00% |
| Rey Mysterio vs Lili | 77–62 | 55.40% |
| Rey Mysterio vs Steve | 77–59 | 56.62% |
| Rey Mysterio vs Xiaoyu | 62–68 | 47.69% |
| Rey Mysterio vs Paul | 63–64 | 49.61% |
| Rey Mysterio vs Feng | 59–68 | 46.46% |
| Rey Mysterio vs Reina | 76–49 | 60.80% |
| Rey Mysterio vs Azucena | 70–49 | 58.82% |
| Rey Mysterio vs Jack-8 | 64–53 | 54.70% |
| Rey Mysterio vs Alisa | 61–42 | 59.22% |
| Rey Mysterio vs Jun | 54–45 | 54.55% |
| Rey Mysterio vs Asuka | 50–47 | 51.55% |
| Rey Mysterio vs Victor | 59–37 | 61.46% |
| Rey Mysterio vs Claudio | 43–52 | 45.26% |
| Rey Mysterio vs Zafina | 43–47 | 47.78% |
| Rey Mysterio vs Shaheen | 37–51 | 42.05% |
| Rey Mysterio vs Eddy | 42–45 | 48.28% |
| Rey Mysterio vs Raven | 37–45 | 45.12% |
| Rey Mysterio vs Lidia | 48–31 | 60.76% |
| Rey Mysterio vs Armor King | 27–49 | 35.53% |
| Rey Mysterio vs Nina | 29–45 | 39.19% |
| Rey Mysterio vs Anna | 37–37 | 50.00% |
| Rey Mysterio vs Kuma | 35–30 | 53.85% |
| Rey Mysterio vs Leroy | 24–36 | 40.00% |
| Rey Mysterio vs Leo | 24–32 | 42.86% |
| Rey Mysterio vs Clive | 25–21 | 54.35% |
| Rey Mysterio vs Panda | 18–23 | 43.90% |
| Rey Mysterio vs Fahkumram | 15–19 | 44.12% |
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.