| Koki ironfist vs Jin | 86–87 | 49.71% |
| Koki ironfist vs Lidia | 78–62–1 | 55.71% |
| Koki ironfist vs Kazuya | 90–44 | 67.16% |
| Koki ironfist vs King | 72–50 | 59.02% |
| Koki ironfist vs Reina | 60–53 | 53.10% |
| Koki ironfist vs Steve | 54–47 | 53.47% |
| Koki ironfist vs Bryan | 54–44 | 55.10% |
| Koki ironfist vs Heihachi | 47–49 | 48.96% |
| Koki ironfist vs Dragunov | 22–49 | 30.99% |
| Koki ironfist vs Paul | 32–37 | 46.38% |
| Koki ironfist vs Victor | 35–33 | 51.47% |
| Koki ironfist vs Lili | 28–32 | 46.67% |
| Koki ironfist vs Hwoarang | 40–19 | 67.80% |
| Koki ironfist vs Azucena | 28–27 | 50.91% |
| Koki ironfist vs Eddy | 30–25 | 54.55% |
| Koki ironfist vs Alisa | 24–29 | 45.28% |
| Koki ironfist vs Yoshimitsu | 20–31 | 39.22% |
| Koki ironfist vs Feng | 24–23 | 51.06% |
| Koki ironfist vs Leroy | 24–22 | 52.17% |
| Koki ironfist vs Asuka | 22–22 | 50.00% |
| Koki ironfist vs Nina | 26–18 | 59.09% |
| Koki ironfist vs Lee | 21–23 | 47.73% |
| Koki ironfist vs Law | 21–22 | 48.84% |
| Koki ironfist vs Xiaoyu | 27–16 | 62.79% |
| Koki ironfist vs Devil Jin | 16–23 | 41.03% |
| Koki ironfist vs Jun | 23–13 | 63.89% |
| Koki ironfist vs Jack-8 | 14–18 | 43.75% |
| Koki ironfist vs Leo | 10–15 | 40.00% |
| Koki ironfist vs Claudio | 13–12 | 52.00% |
| Koki ironfist vs Shaheen | 12–12 | 50.00% |
| Koki ironfist vs Kuma | 9–10 | 47.37% |
| Koki ironfist vs Lars | 8–7 | 53.33% |
| Koki ironfist vs Fahkumram | 5–10 | 33.33% |
| Koki ironfist vs Raven | 2–8 | 20.00% |
| Koki ironfist vs Panda | 3–6 | 33.33% |
| Koki ironfist vs Zafina | 4–5 | 44.44% |
| Koki ironfist vs Clive | 2–5 | 28.57% |
| Koki ironfist vs Anna | 1–1 | 50.00% |
| Koki ironfist vs Armor King | 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.