| OctoSiah vs King | 52–64 | 44.83% |
| OctoSiah vs Hwoarang | 62–44 | 58.49% |
| OctoSiah vs Kazuya | 48–51 | 48.48% |
| OctoSiah vs Jin | 46–50 | 47.92% |
| OctoSiah vs Reina | 56–38 | 59.57% |
| OctoSiah vs Law | 44–41 | 51.76% |
| OctoSiah vs Steve | 29–51 | 36.25% |
| OctoSiah vs Paul | 36–36 | 50.00% |
| OctoSiah vs Bryan | 28–44 | 38.89% |
| OctoSiah vs Heihachi | 32–39 | 45.07% |
| OctoSiah vs Dragunov | 38–32 | 54.29% |
| OctoSiah vs Feng | 29–40 | 42.03% |
| OctoSiah vs Lili | 30–35 | 46.15% |
| OctoSiah vs Yoshimitsu | 28–36 | 43.75% |
| OctoSiah vs Asuka | 28–25 | 52.83% |
| OctoSiah vs Lars | 17–35 | 32.69% |
| OctoSiah vs Lee | 24–28 | 46.15% |
| OctoSiah vs Azucena | 26–23 | 53.06% |
| OctoSiah vs Eddy | 23–25 | 47.92% |
| OctoSiah vs Victor | 17–27 | 38.64% |
| OctoSiah vs Lidia | 25–17 | 59.52% |
| OctoSiah vs Xiaoyu | 24–16 | 60.00% |
| OctoSiah vs Raven | 21–19 | 52.50% |
| OctoSiah vs Jack-8 | 17–22 | 43.59% |
| OctoSiah vs Leroy | 24–14 | 63.16% |
| OctoSiah vs Devil Jin | 22–14 | 61.11% |
| OctoSiah vs Jun | 13–20 | 39.39% |
| OctoSiah vs Armor King | 20–9 | 68.97% |
| OctoSiah vs Nina | 15–13 | 53.57% |
| OctoSiah vs Fahkumram | 19–9 | 67.86% |
| OctoSiah vs Leo | 7–19 | 26.92% |
| OctoSiah vs Alisa | 12–12 | 50.00% |
| OctoSiah vs Clive | 13–9 | 59.09% |
| OctoSiah vs Claudio | 7–14 | 33.33% |
| OctoSiah vs Zafina | 12–9 | 57.14% |
| OctoSiah vs Shaheen | 7–9 | 43.75% |
| OctoSiah vs Kuma | 3–12 | 20.00% |
| OctoSiah vs Panda | 3–3 | 50.00% |
| OctoSiah vs Miary Zo | 3–2 | 60.00% |
| OctoSiah vs Anna | 0–3 | 0.00% |
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.