| Shadonai vs Heihachi | 30–13 | 69.77% |
| Shadonai vs King | 19–21 | 47.50% |
| Shadonai vs Law | 18–18 | 50.00% |
| Shadonai vs Kazuya | 20–16 | 55.56% |
| Shadonai vs Jin | 18–12 | 60.00% |
| Shadonai vs Bryan | 14–10 | 58.33% |
| Shadonai vs Steve | 16–8 | 66.67% |
| Shadonai vs Eddy | 15–9 | 62.50% |
| Shadonai vs Paul | 9–12 | 42.86% |
| Shadonai vs Hwoarang | 17–4 | 80.95% |
| Shadonai vs Asuka | 18–3 | 85.71% |
| Shadonai vs Jun | 12–8 | 60.00% |
| Shadonai vs Reina | 11–9 | 55.00% |
| Shadonai vs Lili | 11–7 | 61.11% |
| Shadonai vs Xiaoyu | 10–7 | 58.82% |
| Shadonai vs Dragunov | 7–8 | 46.67% |
| Shadonai vs Alisa | 8–6 | 57.14% |
| Shadonai vs Azucena | 9–5 | 64.29% |
| Shadonai vs Yoshimitsu | 8–4 | 66.67% |
| Shadonai vs Nina | 10–2 | 83.33% |
| Shadonai vs Lee | 9–3 | 75.00% |
| Shadonai vs Zafina | 8–3 | 72.73% |
| Shadonai vs Leroy | 3–8 | 27.27% |
| Shadonai vs Lars | 6–4 | 60.00% |
| Shadonai vs Jack-8 | 6–3 | 66.67% |
| Shadonai vs Leo | 7–2 | 77.78% |
| Shadonai vs Feng | 7–1 | 87.50% |
| Shadonai vs Devil Jin | 3–4 | 42.86% |
| Shadonai vs Victor | 6–1 | 85.71% |
| Shadonai vs Anna | 3–4 | 42.86% |
| Shadonai vs Shaheen | 4–1 | 80.00% |
| Shadonai vs Raven | 4–1 | 80.00% |
| Shadonai vs Lidia | 4–1 | 80.00% |
| Shadonai vs Claudio | 2–2 | 50.00% |
| Shadonai vs Clive | 0–2 | 0.00% |
| Shadonai vs Kuma | 0–1 | 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.