| Old_Greg vs Kazuya | 151–142 | 51.54% |
| Old_Greg vs Bryan | 142–141 | 50.18% |
| Old_Greg vs Reina | 122–144 | 45.86% |
| Old_Greg vs Jin | 116–106 | 52.25% |
| Old_Greg vs Hwoarang | 124–75 | 62.31% |
| Old_Greg vs King | 108–81 | 57.14% |
| Old_Greg vs Law | 85–99 | 46.20% |
| Old_Greg vs Dragunov | 104–77 | 57.46% |
| Old_Greg vs Yoshimitsu | 65–112 | 36.72% |
| Old_Greg vs Paul | 78–87 | 47.27% |
| Old_Greg vs Azucena | 68–92 | 42.50% |
| Old_Greg vs Lee | 81–73 | 52.60% |
| Old_Greg vs Steve | 75–66 | 53.19% |
| Old_Greg vs Lili | 63–72 | 46.67% |
| Old_Greg vs Devil Jin | 71–58 | 55.04% |
| Old_Greg vs Feng | 53–76 | 41.09% |
| Old_Greg vs Lars | 70–58 | 54.69% |
| Old_Greg vs Xiaoyu | 47–74 | 38.84% |
| Old_Greg vs Nina | 57–60 | 48.72% |
| Old_Greg vs Victor | 52–64 | 44.83% |
| Old_Greg vs Raven | 43–69 | 38.39% |
| Old_Greg vs Asuka | 50–53 | 48.54% |
| Old_Greg vs Jun | 36–67 | 34.95% |
| Old_Greg vs Heihachi | 57–43 | 57.00% |
| Old_Greg vs Alisa | 39–59 | 39.80% |
| Old_Greg vs Eddy | 45–51 | 46.88% |
| Old_Greg vs Armor King | 43–38 | 53.09% |
| Old_Greg vs Zafina | 29–49 | 37.18% |
| Old_Greg vs Leo | 35–33 | 51.47% |
| Old_Greg vs Jack-8 | 29–34 | 46.03% |
| Old_Greg vs Leroy | 23–39 | 37.10% |
| Old_Greg vs Claudio | 32–29 | 52.46% |
| Old_Greg vs Kuma | 19–38 | 33.33% |
| Old_Greg vs Shaheen | 27–29 | 48.21% |
| Old_Greg vs Lidia | 23–23 | 50.00% |
| Old_Greg vs Panda | 17–19 | 47.22% |
| Old_Greg vs Fahkumram | 11–17 | 39.29% |
| Old_Greg vs Clive | 5–5 | 50.00% |
| Old_Greg vs Anna | 4–5 | 44.44% |
| Old_Greg vs Miary Zo | 2–1 | 66.67% |
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.