| Siiaam vs Law | 50–51 | 49.50% |
| Siiaam vs King | 65–33 | 66.33% |
| Siiaam vs Hwoarang | 56–30 | 65.12% |
| Siiaam vs Steve | 60–26 | 69.77% |
| Siiaam vs Jin | 48–31 | 60.76% |
| Siiaam vs Reina | 46–29 | 61.33% |
| Siiaam vs Yoshimitsu | 36–26 | 58.06% |
| Siiaam vs Lili | 44–18 | 70.97% |
| Siiaam vs Eddy | 31–30 | 50.82% |
| Siiaam vs Kazuya | 36–22 | 62.07% |
| Siiaam vs Bryan | 23–33 | 41.07% |
| Siiaam vs Dragunov | 42–13 | 76.36% |
| Siiaam vs Clive | 31–22 | 58.49% |
| Siiaam vs Heihachi | 25–27 | 48.08% |
| Siiaam vs Jun | 36–12 | 75.00% |
| Siiaam vs Azucena | 26–16 | 61.90% |
| Siiaam vs Victor | 29–12 | 70.73% |
| Siiaam vs Lee | 19–18 | 51.35% |
| Siiaam vs Xiaoyu | 25–11 | 69.44% |
| Siiaam vs Devil Jin | 26–10 | 72.22% |
| Siiaam vs Paul | 26–7 | 78.79% |
| Siiaam vs Asuka | 15–16 | 48.39% |
| Siiaam vs Lidia | 17–13 | 56.67% |
| Siiaam vs Alisa | 13–16 | 44.83% |
| Siiaam vs Armor King | 12–16 | 42.86% |
| Siiaam vs Feng | 14–13 | 51.85% |
| Siiaam vs Leroy | 13–9 | 59.09% |
| Siiaam vs Leo | 9–10 | 47.37% |
| Siiaam vs Fahkumram | 9–10 | 47.37% |
| Siiaam vs Kuma | 10–7 | 58.82% |
| Siiaam vs Zafina | 11–6 | 64.71% |
| Siiaam vs Raven | 11–6 | 64.71% |
| Siiaam vs Jack-8 | 9–7 | 56.25% |
| Siiaam vs Lars | 12–3 | 80.00% |
| Siiaam vs Claudio | 8–7 | 53.33% |
| Siiaam vs Nina | 5–10 | 33.33% |
| Siiaam vs Anna | 11–4 | 73.33% |
| Siiaam vs Shaheen | 7–5 | 58.33% |
| Siiaam vs Miary Zo | 4–1 | 80.00% |
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.