| OMalley vs Kazuya | 185–226 | 45.01% |
| OMalley vs Heihachi | 190–176–1 | 51.91% |
| OMalley vs King | 153–122 | 55.64% |
| OMalley vs Jin | 136–131 | 50.94% |
| OMalley vs Reina | 132–135 | 49.44% |
| OMalley vs Bryan | 127–131 | 49.22% |
| OMalley vs Steve | 109–139 | 43.95% |
| OMalley vs Law | 76–82 | 48.10% |
| OMalley vs Hwoarang | 75–82 | 47.77% |
| OMalley vs Dragunov | 63–76 | 45.32% |
| OMalley vs Lidia | 55–80 | 40.74% |
| OMalley vs Clive | 81–51 | 61.36% |
| OMalley vs Paul | 49–82 | 37.40% |
| OMalley vs Yoshimitsu | 43–84 | 33.86% |
| OMalley vs Lili | 40–87 | 31.50% |
| OMalley vs Lee | 44–83 | 34.65% |
| OMalley vs Devil Jin | 54–69 | 43.90% |
| OMalley vs Asuka | 55–64 | 46.22% |
| OMalley vs Jun | 60–59 | 50.42% |
| OMalley vs Victor | 46–60 | 43.40% |
| OMalley vs Feng | 39–51 | 43.33% |
| OMalley vs Azucena | 38–49 | 43.68% |
| OMalley vs Lars | 34–52 | 39.53% |
| OMalley vs Nina | 32–51 | 38.55% |
| OMalley vs Leroy | 37–44 | 45.68% |
| OMalley vs Leo | 31–44 | 41.33% |
| OMalley vs Fahkumram | 33–42 | 44.00% |
| OMalley vs Raven | 35–38 | 47.95% |
| OMalley vs Xiaoyu | 32–40 | 44.44% |
| OMalley vs Jack-8 | 23–33 | 41.07% |
| OMalley vs Alisa | 27–28 | 49.09% |
| OMalley vs Claudio | 15–38 | 28.30% |
| OMalley vs Eddy | 10–36 | 21.74% |
| OMalley vs Kuma | 22–20 | 52.38% |
| OMalley vs Anna | 11–13 | 45.83% |
| OMalley vs Shaheen | 6–17 | 26.09% |
| OMalley vs Zafina | 11–12 | 47.83% |
| OMalley vs Panda | 4–4 | 50.00% |
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.