| Siokoy vs King | 82–72 | 53.25% |
| Siokoy vs Reina | 51–98 | 34.23% |
| Siokoy vs Kazuya | 63–75 | 45.65% |
| Siokoy vs Jin | 58–67 | 46.40% |
| Siokoy vs Bryan | 42–69 | 37.84% |
| Siokoy vs Hwoarang | 43–53 | 44.79% |
| Siokoy vs Steve | 47–46 | 50.54% |
| Siokoy vs Lili | 36–56 | 39.13% |
| Siokoy vs Dragunov | 34–51 | 40.00% |
| Siokoy vs Eddy | 32–52 | 38.10% |
| Siokoy vs Azucena | 35–39 | 47.30% |
| Siokoy vs Asuka | 34–37 | 47.89% |
| Siokoy vs Lars | 24–39 | 38.10% |
| Siokoy vs Jun | 28–35 | 44.44% |
| Siokoy vs Victor | 23–39 | 37.10% |
| Siokoy vs Law | 16–42–1 | 27.59% |
| Siokoy vs Devil Jin | 17–40 | 29.82% |
| Siokoy vs Yoshimitsu | 23–32 | 41.82% |
| Siokoy vs Lee | 27–28 | 49.09% |
| Siokoy vs Leo | 22–32 | 40.74% |
| Siokoy vs Paul | 17–30 | 36.17% |
| Siokoy vs Xiaoyu | 23–19 | 54.76% |
| Siokoy vs Nina | 21–21 | 50.00% |
| Siokoy vs Feng | 11–29 | 27.50% |
| Siokoy vs Jack-8 | 13–23 | 36.11% |
| Siokoy vs Raven | 13–20 | 39.39% |
| Siokoy vs Claudio | 16–14 | 53.33% |
| Siokoy vs Leroy | 8–18 | 30.77% |
| Siokoy vs Shaheen | 9–12 | 42.86% |
| Siokoy vs Alisa | 5–11 | 31.25% |
| Siokoy vs Kuma | 5–8 | 38.46% |
| Siokoy vs Zafina | 4–7 | 36.36% |
| Siokoy vs Panda | 0–2 | 0.00% |
| Siokoy vs Heihachi | 0–2 | 0.00% |
| Siokoy vs Clive | 1–0 | 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.