| Siiaam vs Law | 61–56 | 52.14% |
| Siiaam vs King | 74–37 | 66.67% |
| Siiaam vs Hwoarang | 63–35 | 64.29% |
| Siiaam vs Steve | 62–30 | 67.39% |
| Siiaam vs Reina | 54–33 | 62.07% |
| Siiaam vs Jin | 54–32 | 62.79% |
| Siiaam vs Yoshimitsu | 42–27 | 60.87% |
| Siiaam vs Bryan | 30–35 | 46.15% |
| Siiaam vs Kazuya | 40–25 | 61.54% |
| Siiaam vs Eddy | 32–33 | 49.23% |
| Siiaam vs Lili | 44–18 | 70.97% |
| Siiaam vs Clive | 34–26 | 56.67% |
| Siiaam vs Dragunov | 42–13 | 76.36% |
| Siiaam vs Heihachi | 28–27 | 50.91% |
| Siiaam vs Jun | 36–13 | 73.47% |
| Siiaam vs Azucena | 27–18 | 60.00% |
| Siiaam vs Victor | 31–12 | 72.09% |
| Siiaam vs Paul | 29–10 | 74.36% |
| Siiaam vs Lee | 21–18 | 53.85% |
| Siiaam vs Xiaoyu | 25–11 | 69.44% |
| Siiaam vs Devil Jin | 26–10 | 72.22% |
| Siiaam vs Asuka | 15–18 | 45.45% |
| Siiaam vs Lidia | 17–13 | 56.67% |
| Siiaam vs Armor King | 14–16 | 46.67% |
| Siiaam vs Feng | 16–13 | 55.17% |
| Siiaam vs Alisa | 13–16 | 44.83% |
| Siiaam vs Fahkumram | 11–12 | 47.83% |
| Siiaam vs Leroy | 13–9 | 59.09% |
| Siiaam vs Leo | 9–10 | 47.37% |
| Siiaam vs Zafina | 13–6 | 68.42% |
| Siiaam vs Jack-8 | 10–7 | 58.82% |
| Siiaam vs Claudio | 8–9 | 47.06% |
| Siiaam vs Kuma | 10–7 | 58.82% |
| Siiaam vs Raven | 11–6 | 64.71% |
| Siiaam vs Anna | 12–5 | 70.59% |
| Siiaam vs Lars | 12–3 | 80.00% |
| Siiaam vs Shaheen | 9–6 | 60.00% |
| Siiaam vs Nina | 5–10 | 33.33% |
| Siiaam vs Miary Zo | 6–5 | 54.55% |
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.