| Ataru vs King | 16–13 | 55.17% |
| Ataru vs Eddy | 6–21 | 22.22% |
| Ataru vs Yoshimitsu | 15–10 | 60.00% |
| Ataru vs Asuka | 11–13 | 45.83% |
| Ataru vs Reina | 12–12 | 50.00% |
| Ataru vs Azucena | 12–11 | 52.17% |
| Ataru vs Bryan | 12–10 | 54.55% |
| Ataru vs Victor | 11–11 | 50.00% |
| Ataru vs Steve | 11–9 | 55.00% |
| Ataru vs Jun | 4–12 | 25.00% |
| Ataru vs Lars | 7–7 | 50.00% |
| Ataru vs Hwoarang | 5–8 | 38.46% |
| Ataru vs Xiaoyu | 8–4 | 66.67% |
| Ataru vs Kazuya | 5–5 | 50.00% |
| Ataru vs Dragunov | 4–6 | 40.00% |
| Ataru vs Lee | 2–6 | 25.00% |
| Ataru vs Raven | 0–8 | 0.00% |
| Ataru vs Law | 1–6 | 14.29% |
| Ataru vs Jin | 1–6 | 14.29% |
| Ataru vs Nina | 0–7 | 0.00% |
| Ataru vs Jack-8 | 2–4 | 33.33% |
| Ataru vs Alisa | 2–4 | 33.33% |
| Ataru vs Lili | 0–5 | 0.00% |
| Ataru vs Paul | 2–2 | 50.00% |
| Ataru vs Devil Jin | 0–4 | 0.00% |
| Ataru vs Leroy | 2–2 | 50.00% |
| Ataru vs Heihachi | 3–1 | 75.00% |
| Ataru vs Leo | 2–1 | 66.67% |
| Ataru vs Claudio | 1–2 | 33.33% |
| Ataru vs Shaheen | 2–1 | 66.67% |
| Ataru vs Clive | 2–1 | 66.67% |
| Ataru vs Anna | 0–2 | 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.