| Ayumu Kasuga vs Jin | 6–12 | 33.33% |
| Ayumu Kasuga vs Dragunov | 11–5 | 68.75% |
| Ayumu Kasuga vs Reina | 8–6 | 57.14% |
| Ayumu Kasuga vs Bryan | 3–9 | 25.00% |
| Ayumu Kasuga vs Steve | 8–3 | 72.73% |
| Ayumu Kasuga vs Heihachi | 6–5 | 54.55% |
| Ayumu Kasuga vs Armor King | 6–4 | 60.00% |
| Ayumu Kasuga vs King | 4–5 | 44.44% |
| Ayumu Kasuga vs Yoshimitsu | 4–4 | 50.00% |
| Ayumu Kasuga vs Jun | 3–5 | 37.50% |
| Ayumu Kasuga vs Paul | 3–4 | 42.86% |
| Ayumu Kasuga vs Lili | 1–5 | 16.67% |
| Ayumu Kasuga vs Lars | 4–2 | 66.67% |
| Ayumu Kasuga vs Nina | 6–0 | 100.00% |
| Ayumu Kasuga vs Lee | 2–4 | 33.33% |
| Ayumu Kasuga vs Law | 0–4–1 | 0.00% |
| Ayumu Kasuga vs Kazuya | 3–2 | 60.00% |
| Ayumu Kasuga vs Devil Jin | 5–0 | 100.00% |
| Ayumu Kasuga vs Claudio | 0–5 | 0.00% |
| Ayumu Kasuga vs Victor | 3–2 | 60.00% |
| Ayumu Kasuga vs Anna | 3–2 | 60.00% |
| Ayumu Kasuga vs Miary Zo | 1–4 | 20.00% |
| Ayumu Kasuga vs Alisa | 2–2 | 50.00% |
| Ayumu Kasuga vs Eddy | 3–1 | 75.00% |
| Ayumu Kasuga vs Clive | 3–1 | 75.00% |
| Ayumu Kasuga vs Fahkumram | 0–4 | 0.00% |
| Ayumu Kasuga vs Feng | 2–1 | 66.67% |
| Ayumu Kasuga vs Lidia | 1–2 | 33.33% |
| Ayumu Kasuga vs Asuka | 0–2 | 0.00% |
| Ayumu Kasuga vs Shaheen | 0–2 | 0.00% |
| Ayumu Kasuga vs Hwoarang | 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.