| Gullboy vs Reina | 168–169–1 | 49.85% |
| Gullboy vs Dragunov | 114–189 | 37.62% |
| Gullboy vs Paul | 138–161 | 46.15% |
| Gullboy vs King | 119–165 | 41.90% |
| Gullboy vs Kazuya | 143–133 | 51.81% |
| Gullboy vs Hwoarang | 130–125 | 50.98% |
| Gullboy vs Bryan | 100–151 | 39.84% |
| Gullboy vs Jin | 98–135 | 42.06% |
| Gullboy vs Lili | 119–98 | 54.84% |
| Gullboy vs Asuka | 88–125 | 41.31% |
| Gullboy vs Yoshimitsu | 89–83 | 51.74% |
| Gullboy vs Steve | 90–81 | 52.63% |
| Gullboy vs Victor | 62–83 | 42.76% |
| Gullboy vs Jun | 67–74 | 47.52% |
| Gullboy vs Alisa | 46–87 | 34.59% |
| Gullboy vs Nina | 62–60 | 50.82% |
| Gullboy vs Law | 54–63 | 46.15% |
| Gullboy vs Devil Jin | 49–64 | 43.36% |
| Gullboy vs Xiaoyu | 50–56 | 47.17% |
| Gullboy vs Claudio | 47–59 | 44.34% |
| Gullboy vs Azucena | 41–64–1 | 39.05% |
| Gullboy vs Eddy | 40–64 | 38.46% |
| Gullboy vs Feng | 44–59 | 42.72% |
| Gullboy vs Leo | 36–66 | 35.29% |
| Gullboy vs Leroy | 44–46 | 48.89% |
| Gullboy vs Lars | 25–59 | 29.76% |
| Gullboy vs Jack-8 | 18–58 | 23.68% |
| Gullboy vs Lee | 26–50 | 34.21% |
| Gullboy vs Heihachi | 28–34 | 45.16% |
| Gullboy vs Lidia | 29–32 | 47.54% |
| Gullboy vs Shaheen | 22–33 | 40.00% |
| Gullboy vs Kuma | 20–24 | 45.45% |
| Gullboy vs Zafina | 17–22 | 43.59% |
| Gullboy vs Clive | 15–18 | 45.45% |
| Gullboy vs Raven | 11–20 | 35.48% |
| Gullboy vs Panda | 5–11 | 31.25% |
| Gullboy vs Fahkumram | 4–2 | 66.67% |
| Gullboy vs Anna | 4–0 | 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.