| Radek vs King | 4–8 | 33.33% |
| Radek vs Hwoarang | 8–2 | 80.00% |
| Radek vs Steve | 6–4 | 60.00% |
| Radek vs Dragunov | 4–6 | 40.00% |
| Radek vs Jin | 8–1 | 88.89% |
| Radek vs Reina | 6–2 | 75.00% |
| Radek vs Bryan | 4–3 | 57.14% |
| Radek vs Asuka | 4–3 | 57.14% |
| Radek vs Law | 2–4 | 33.33% |
| Radek vs Kazuya | 5–1 | 83.33% |
| Radek vs Alisa | 2–4 | 33.33% |
| Radek vs Nina | 3–3 | 50.00% |
| Radek vs Jun | 3–3 | 50.00% |
| Radek vs Yoshimitsu | 0–5 | 0.00% |
| Radek vs Lili | 3–2 | 60.00% |
| Radek vs Lars | 1–4 | 20.00% |
| Radek vs Lidia | 5–0 | 100.00% |
| Radek vs Heihachi | 2–3 | 40.00% |
| Radek vs Fahkumram | 1–4 | 20.00% |
| Radek vs Zafina | 4–0 | 100.00% |
| Radek vs Leroy | 2–2 | 50.00% |
| Radek vs Azucena | 2–2 | 50.00% |
| Radek vs Eddy | 1–3 | 25.00% |
| Radek vs Paul | 2–1 | 66.67% |
| Radek vs Xiaoyu | 2–1 | 66.67% |
| Radek vs Feng | 0–3 | 0.00% |
| Radek vs Victor | 1–2 | 33.33% |
| Radek vs Miary Zo | 0–3 | 0.00% |
| Radek vs Devil Jin | 2–0 | 100.00% |
| Radek vs Claudio | 0–2 | 0.00% |
| Radek vs Armor King | 2–0 | 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.