| JustSammy vs Kazuya | 174–112 | 60.84% |
| JustSammy vs Bryan | 127–102 | 55.46% |
| JustSammy vs Jin | 111–94 | 54.15% |
| JustSammy vs Reina | 107–73 | 59.44% |
| JustSammy vs Heihachi | 84–92 | 47.73% |
| JustSammy vs Steve | 86–83 | 50.89% |
| JustSammy vs Lidia | 98–71 | 57.99% |
| JustSammy vs Hwoarang | 102–60 | 62.96% |
| JustSammy vs King | 103–57 | 64.38% |
| JustSammy vs Law | 79–65 | 54.86% |
| JustSammy vs Dragunov | 90–49 | 64.75% |
| JustSammy vs Lee | 66–72 | 47.83% |
| JustSammy vs Paul | 71–62 | 53.38% |
| JustSammy vs Yoshimitsu | 72–58 | 55.38% |
| JustSammy vs Lili | 75–53 | 58.59% |
| JustSammy vs Jun | 72–54 | 57.14% |
| JustSammy vs Azucena | 79–46 | 63.20% |
| JustSammy vs Lars | 61–55 | 52.59% |
| JustSammy vs Asuka | 69–38 | 64.49% |
| JustSammy vs Devil Jin | 49–56 | 46.67% |
| JustSammy vs Victor | 69–28 | 71.13% |
| JustSammy vs Feng | 57–39 | 59.38% |
| JustSammy vs Leo | 44–35 | 55.70% |
| JustSammy vs Nina | 43–35 | 55.13% |
| JustSammy vs Eddy | 53–21 | 71.62% |
| JustSammy vs Raven | 33–37 | 47.14% |
| JustSammy vs Xiaoyu | 27–40 | 40.30% |
| JustSammy vs Leroy | 40–27 | 59.70% |
| JustSammy vs Claudio | 36–30 | 54.55% |
| JustSammy vs Jack-8 | 31–25 | 55.36% |
| JustSammy vs Alisa | 26–20 | 56.52% |
| JustSammy vs Zafina | 25–16 | 60.98% |
| JustSammy vs Shaheen | 17–16 | 51.52% |
| JustSammy vs Clive | 18–13 | 58.06% |
| JustSammy vs Kuma | 14–12 | 53.85% |
| JustSammy vs Panda | 14–8 | 63.64% |
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.