| SeniorJohn vs Heihachi | 10–11 | 47.62% |
| SeniorJohn vs Lili | 6–13 | 31.58% |
| SeniorJohn vs King | 6–11 | 35.29% |
| SeniorJohn vs Kazuya | 2–15 | 11.76% |
| SeniorJohn vs Hwoarang | 8–7 | 53.33% |
| SeniorJohn vs Jun | 9–6 | 60.00% |
| SeniorJohn vs Reina | 6–6 | 50.00% |
| SeniorJohn vs Victor | 3–8 | 27.27% |
| SeniorJohn vs Jin | 5–5 | 50.00% |
| SeniorJohn vs Steve | 5–5 | 50.00% |
| SeniorJohn vs Asuka | 2–7 | 22.22% |
| SeniorJohn vs Nina | 5–4 | 55.56% |
| SeniorJohn vs Bryan | 4–4 | 50.00% |
| SeniorJohn vs Shaheen | 2–6 | 25.00% |
| SeniorJohn vs Azucena | 3–5 | 37.50% |
| SeniorJohn vs Lee | 2–4 | 33.33% |
| SeniorJohn vs Law | 2–3 | 40.00% |
| SeniorJohn vs Xiaoyu | 1–4 | 20.00% |
| SeniorJohn vs Eddy | 0–4 | 0.00% |
| SeniorJohn vs Yoshimitsu | 0–3 | 0.00% |
| SeniorJohn vs Feng | 2–1 | 66.67% |
| SeniorJohn vs Jack-8 | 0–2 | 0.00% |
| SeniorJohn vs Leo | 2–0 | 100.00% |
| SeniorJohn vs Kuma | 0–2 | 0.00% |
| SeniorJohn vs Zafina | 0–2 | 0.00% |
| SeniorJohn vs Raven | 1–1 | 50.00% |
| SeniorJohn vs Clive | 0–2 | 0.00% |
| SeniorJohn vs Devil Jin | 1–0 | 100.00% |
| SeniorJohn vs Lars | 1–0 | 100.00% |
| SeniorJohn vs Lidia | 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.