| Simon Riley vs Kazuya | 11–7 | 61.11% |
| Simon Riley vs Lee | 7–4 | 63.64% |
| Simon Riley vs Victor | 7–4 | 63.64% |
| Simon Riley vs King | 6–1 | 85.71% |
| Simon Riley vs Asuka | 3–4 | 42.86% |
| Simon Riley vs Claudio | 5–2 | 71.43% |
| Simon Riley vs Reina | 6–1 | 85.71% |
| Simon Riley vs Yoshimitsu | 5–1 | 83.33% |
| Simon Riley vs Jin | 3–3 | 50.00% |
| Simon Riley vs Jun | 3–3 | 50.00% |
| Simon Riley vs Lidia | 4–2 | 66.67% |
| Simon Riley vs Bryan | 4–1 | 80.00% |
| Simon Riley vs Eddy | 4–1 | 80.00% |
| Simon Riley vs Heihachi | 1–4 | 20.00% |
| Simon Riley vs Hwoarang | 3–1 | 75.00% |
| Simon Riley vs Xiaoyu | 1–3 | 25.00% |
| Simon Riley vs Dragunov | 1–3 | 25.00% |
| Simon Riley vs Steve | 3–0 | 100.00% |
| Simon Riley vs Lili | 2–1 | 66.67% |
| Simon Riley vs Zafina | 2–1 | 66.67% |
| Simon Riley vs Leroy | 1–2 | 33.33% |
| Simon Riley vs Law | 1–1 | 50.00% |
| Simon Riley vs Alisa | 2–0 | 100.00% |
| Simon Riley vs Nina | 0–2 | 0.00% |
| Simon Riley vs Clive | 1–1 | 50.00% |
| Simon Riley vs Jack-8 | 0–1 | 0.00% |
| Simon Riley vs Feng | 0–1 | 0.00% |
| Simon Riley vs Leo | 1–0 | 100.00% |
| Simon Riley vs Azucena | 1–0 | 100.00% |
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.