| STM9S vs King | 16–18 | 47.06% |
| STM9S vs Kazuya | 2–11 | 15.38% |
| STM9S vs Nina | 6–4 | 60.00% |
| STM9S vs Steve | 4–5 | 44.44% |
| STM9S vs Hwoarang | 5–3 | 62.50% |
| STM9S vs Jun | 2–5 | 28.57% |
| STM9S vs Victor | 3–4 | 42.86% |
| STM9S vs Law | 3–3 | 50.00% |
| STM9S vs Bryan | 2–4 | 33.33% |
| STM9S vs Dragunov | 2–4 | 33.33% |
| STM9S vs Lidia | 3–3 | 50.00% |
| STM9S vs Heihachi | 3–3 | 50.00% |
| STM9S vs Lili | 4–1 | 80.00% |
| STM9S vs Lee | 3–2 | 60.00% |
| STM9S vs Fahkumram | 3–2 | 60.00% |
| STM9S vs Azucena | 2–2 | 50.00% |
| STM9S vs Eddy | 3–1 | 75.00% |
| STM9S vs Anna | 3–1 | 75.00% |
| STM9S vs Jin | 0–3 | 0.00% |
| STM9S vs Jack-8 | 1–2 | 33.33% |
| STM9S vs Lars | 2–1 | 66.67% |
| STM9S vs Alisa | 3–0 | 100.00% |
| STM9S vs Leroy | 1–2 | 33.33% |
| STM9S vs Raven | 1–2 | 33.33% |
| STM9S vs Paul | 0–2 | 0.00% |
| STM9S vs Yoshimitsu | 2–0 | 100.00% |
| STM9S vs Asuka | 0–2 | 0.00% |
| STM9S vs Devil Jin | 0–2 | 0.00% |
| STM9S vs Zafina | 2–0 | 100.00% |
| STM9S vs Reina | 0–2 | 0.00% |
| STM9S vs Xiaoyu | 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.