| Sewczyk vs Jin | 11–5 | 68.75% |
| Sewczyk vs Kazuya | 8–1 | 88.89% |
| Sewczyk vs Steve | 5–4 | 55.56% |
| Sewczyk vs Asuka | 5–4 | 55.56% |
| Sewczyk vs Yoshimitsu | 5–2 | 71.43% |
| Sewczyk vs Hwoarang | 4–3 | 57.14% |
| Sewczyk vs Lars | 6–1 | 85.71% |
| Sewczyk vs Reina | 6–1 | 85.71% |
| Sewczyk vs Eddy | 6–1 | 85.71% |
| Sewczyk vs Jun | 5–1 | 83.33% |
| Sewczyk vs King | 0–5 | 0.00% |
| Sewczyk vs Bryan | 2–3 | 40.00% |
| Sewczyk vs Shaheen | 4–1 | 80.00% |
| Sewczyk vs Lee | 2–3 | 40.00% |
| Sewczyk vs Nina | 2–2 | 50.00% |
| Sewczyk vs Law | 2–1 | 66.67% |
| Sewczyk vs Jack-8 | 3–0 | 100.00% |
| Sewczyk vs Lili | 3–0 | 100.00% |
| Sewczyk vs Alisa | 2–1 | 66.67% |
| Sewczyk vs Claudio | 2–1 | 66.67% |
| Sewczyk vs Feng | 2–0 | 100.00% |
| Sewczyk vs Dragunov | 2–0 | 100.00% |
| Sewczyk vs Leo | 2–0 | 100.00% |
| Sewczyk vs Kuma | 0–2 | 0.00% |
| Sewczyk vs Leroy | 0–2 | 0.00% |
| Sewczyk vs Victor | 2–0 | 100.00% |
| Sewczyk vs Paul | 1–0 | 100.00% |
| Sewczyk vs Zafina | 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.