| JD421 vs Clive | 4–5 | 44.44% |
| JD421 vs Reina | 6–2 | 75.00% |
| JD421 vs King | 3–4 | 42.86% |
| JD421 vs Steve | 3–4 | 42.86% |
| JD421 vs Jin | 1–5 | 16.67% |
| JD421 vs Jack-8 | 2–4 | 33.33% |
| JD421 vs Nina | 5–1 | 83.33% |
| JD421 vs Jun | 1–4 | 20.00% |
| JD421 vs Raven | 1–4 | 20.00% |
| JD421 vs Hwoarang | 1–2 | 33.33% |
| JD421 vs Bryan | 1–2 | 33.33% |
| JD421 vs Kazuya | 1–2 | 33.33% |
| JD421 vs Xiaoyu | 2–0 | 100.00% |
| JD421 vs Asuka | 0–2 | 0.00% |
| JD421 vs Lili | 0–2 | 0.00% |
| JD421 vs Leo | 0–2 | 0.00% |
| JD421 vs Claudio | 0–2 | 0.00% |
| JD421 vs Victor | 0–2 | 0.00% |
| JD421 vs Paul | 1–0 | 100.00% |
| JD421 vs Alisa | 1–0 | 100.00% |
| JD421 vs Leroy | 0–1 | 0.00% |
| JD421 vs Azucena | 1–0 | 100.00% |
| JD421 vs Eddy | 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.