| firefightk9 vs King | 82–70 | 53.95% |
| firefightk9 vs Reina | 70–82 | 46.05% |
| firefightk9 vs Kazuya | 41–78 | 34.45% |
| firefightk9 vs Steve | 30–70 | 30.00% |
| firefightk9 vs Jin | 41–58 | 41.41% |
| firefightk9 vs Dragunov | 28–57 | 32.94% |
| firefightk9 vs Bryan | 24–48 | 33.33% |
| firefightk9 vs Lili | 25–42 | 37.31% |
| firefightk9 vs Hwoarang | 28–37 | 43.08% |
| firefightk9 vs Paul | 22–35 | 38.60% |
| firefightk9 vs Yoshimitsu | 22–35 | 38.60% |
| firefightk9 vs Jun | 14–35 | 28.57% |
| firefightk9 vs Law | 19–28 | 40.43% |
| firefightk9 vs Asuka | 16–29 | 35.56% |
| firefightk9 vs Jack-8 | 18–26 | 40.91% |
| firefightk9 vs Lee | 15–26 | 36.59% |
| firefightk9 vs Azucena | 15–23 | 39.47% |
| firefightk9 vs Victor | 16–22 | 42.11% |
| firefightk9 vs Eddy | 13–25 | 34.21% |
| firefightk9 vs Raven | 13–23 | 36.11% |
| firefightk9 vs Leroy | 13–22 | 37.14% |
| firefightk9 vs Xiaoyu | 12–20 | 37.50% |
| firefightk9 vs Leo | 11–19 | 36.67% |
| firefightk9 vs Lidia | 14–15 | 48.28% |
| firefightk9 vs Feng | 13–14 | 48.15% |
| firefightk9 vs Nina | 11–15 | 42.31% |
| firefightk9 vs Lars | 8–17 | 32.00% |
| firefightk9 vs Kuma | 7–16 | 30.43% |
| firefightk9 vs Devil Jin | 13–7 | 65.00% |
| firefightk9 vs Alisa | 9–8 | 52.94% |
| firefightk9 vs Shaheen | 8–9 | 47.06% |
| firefightk9 vs Claudio | 5–8 | 38.46% |
| firefightk9 vs Heihachi | 7–6 | 53.85% |
| firefightk9 vs Panda | 4–6 | 40.00% |
| firefightk9 vs Zafina | 0–6 | 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.