| ichiya vs Armor King | 58–82 | 41.43% |
| ichiya vs Kazuya | 54–84 | 39.13% |
| ichiya vs King | 49–61 | 44.55% |
| ichiya vs Paul | 43–54 | 44.33% |
| ichiya vs Jin | 42–48 | 46.67% |
| ichiya vs Miary Zo | 47–37 | 55.95% |
| ichiya vs Bryan | 26–54 | 32.50% |
| ichiya vs Hwoarang | 35–39 | 47.30% |
| ichiya vs Asuka | 24–50 | 32.43% |
| ichiya vs Dragunov | 38–34 | 52.78% |
| ichiya vs Heihachi | 29–42 | 40.85% |
| ichiya vs Steve | 27–32 | 45.76% |
| ichiya vs Lee | 26–32 | 44.83% |
| ichiya vs Reina | 31–27 | 53.45% |
| ichiya vs Law | 28–27 | 50.91% |
| ichiya vs Lili | 22–32 | 40.74% |
| ichiya vs Jun | 20–33 | 37.74% |
| ichiya vs Eddy | 31–19 | 62.00% |
| ichiya vs Victor | 14–31 | 31.11% |
| ichiya vs Azucena | 14–30 | 31.82% |
| ichiya vs Yoshimitsu | 25–17 | 59.52% |
| ichiya vs Nina | 13–29 | 30.95% |
| ichiya vs Xiaoyu | 14–27 | 34.15% |
| ichiya vs Clive | 18–22 | 45.00% |
| ichiya vs Fahkumram | 21–19 | 52.50% |
| ichiya vs Devil Jin | 19–20 | 48.72% |
| ichiya vs Leo | 13–23 | 36.11% |
| ichiya vs Lars | 18–18 | 50.00% |
| ichiya vs Leroy | 16–19 | 45.71% |
| ichiya vs Anna | 10–19 | 34.48% |
| ichiya vs Claudio | 18–9 | 66.67% |
| ichiya vs Feng | 8–15 | 34.78% |
| ichiya vs Lidia | 10–13 | 43.48% |
| ichiya vs Alisa | 8–14 | 36.36% |
| ichiya vs Panda | 14–8 | 63.64% |
| ichiya vs Jack-8 | 9–10 | 47.37% |
| ichiya vs Zafina | 5–10 | 33.33% |
| ichiya vs Raven | 6–9 | 40.00% |
| ichiya vs Shaheen | 5–8 | 38.46% |
| ichiya vs Kuma | 5–4 | 55.56% |
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.