| Ken firehit vs Eddy | 3–14 | 17.65% |
| Ken firehit vs Reina | 6–9 | 40.00% |
| Ken firehit vs Steve | 6–4 | 60.00% |
| Ken firehit vs Jun | 7–3 | 70.00% |
| Ken firehit vs Yoshimitsu | 3–6 | 33.33% |
| Ken firehit vs Lili | 2–7 | 22.22% |
| Ken firehit vs Hwoarang | 1–8 | 11.11% |
| Ken firehit vs Leo | 4–5 | 44.44% |
| Ken firehit vs Paul | 0–8 | 0.00% |
| Ken firehit vs Jin | 2–4 | 33.33% |
| Ken firehit vs Xiaoyu | 3–2 | 60.00% |
| Ken firehit vs Victor | 5–0 | 100.00% |
| Ken firehit vs Lee | 1–4 | 20.00% |
| Ken firehit vs Kazuya | 1–3 | 25.00% |
| Ken firehit vs Alisa | 0–4 | 0.00% |
| Ken firehit vs Lars | 0–3 | 0.00% |
| Ken firehit vs Devil Jin | 2–1 | 66.67% |
| Ken firehit vs Leroy | 1–2 | 33.33% |
| Ken firehit vs Law | 0–2 | 0.00% |
| Ken firehit vs King | 0–2 | 0.00% |
| Ken firehit vs Bryan | 0–2 | 0.00% |
| Ken firehit vs Asuka | 0–2 | 0.00% |
| Ken firehit vs Shaheen | 2–0 | 100.00% |
| Ken firehit vs Kuma | 0–2 | 0.00% |
| Ken firehit vs Jack-8 | 0–1 | 0.00% |
| Ken firehit vs Feng | 0–1 | 0.00% |
| Ken firehit vs Claudio | 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.