| Koichima vs King | 18–13 | 58.06% |
| Koichima vs Steve | 24–7 | 77.42% |
| Koichima vs Reina | 10–6 | 62.50% |
| Koichima vs Law | 7–8 | 46.67% |
| Koichima vs Kazuya | 7–8 | 46.67% |
| Koichima vs Fahkumram | 4–11 | 26.67% |
| Koichima vs Azucena | 10–4 | 71.43% |
| Koichima vs Hwoarang | 5–6 | 45.45% |
| Koichima vs Dragunov | 6–4 | 60.00% |
| Koichima vs Jun | 3–7 | 30.00% |
| Koichima vs Bryan | 5–4 | 55.56% |
| Koichima vs Lili | 9–0 | 100.00% |
| Koichima vs Paul | 6–2 | 75.00% |
| Koichima vs Lars | 5–3 | 62.50% |
| Koichima vs Jin | 2–5 | 28.57% |
| Koichima vs Heihachi | 5–2 | 71.43% |
| Koichima vs Jack-8 | 3–3 | 50.00% |
| Koichima vs Alisa | 2–4 | 33.33% |
| Koichima vs Victor | 4–2 | 66.67% |
| Koichima vs Xiaoyu | 3–2 | 60.00% |
| Koichima vs Feng | 4–1 | 80.00% |
| Koichima vs Kuma | 4–1 | 80.00% |
| Koichima vs Leroy | 2–3 | 40.00% |
| Koichima vs Clive | 2–3 | 40.00% |
| Koichima vs Asuka | 0–4 | 0.00% |
| Koichima vs Panda | 1–3 | 25.00% |
| Koichima vs Raven | 2–2 | 50.00% |
| Koichima vs Anna | 0–4 | 0.00% |
| Koichima vs Yoshimitsu | 2–1 | 66.67% |
| Koichima vs Eddy | 1–2 | 33.33% |
| Koichima vs Lidia | 1–2 | 33.33% |
| Koichima vs Armor King | 0–3 | 0.00% |
| Koichima vs Nina | 0–2 | 0.00% |
| Koichima vs Lee | 0–2 | 0.00% |
| Koichima vs Leo | 1–0 | 100.00% |
| Koichima vs Claudio | 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.