| ItzSif vs King | 12–10 | 54.55% |
| ItzSif vs Steve | 11–4 | 73.33% |
| ItzSif vs Hwoarang | 7–6 | 53.85% |
| ItzSif vs Jin | 9–2 | 81.82% |
| ItzSif vs Kazuya | 9–2 | 81.82% |
| ItzSif vs Asuka | 6–4 | 60.00% |
| ItzSif vs Xiaoyu | 5–4 | 55.56% |
| ItzSif vs Law | 5–3 | 62.50% |
| ItzSif vs Dragunov | 5–3 | 62.50% |
| ItzSif vs Raven | 6–2 | 75.00% |
| ItzSif vs Heihachi | 6–2 | 75.00% |
| ItzSif vs Paul | 1–6 | 14.29% |
| ItzSif vs Armor King | 6–1 | 85.71% |
| ItzSif vs Devil Jin | 6–0 | 100.00% |
| ItzSif vs Nina | 6–0 | 100.00% |
| ItzSif vs Yoshimitsu | 3–2 | 60.00% |
| ItzSif vs Reina | 5–0 | 100.00% |
| ItzSif vs Azucena | 5–0 | 100.00% |
| ItzSif vs Lidia | 3–2 | 60.00% |
| ItzSif vs Clive | 2–3 | 40.00% |
| ItzSif vs Lars | 3–1 | 75.00% |
| ItzSif vs Shaheen | 3–1 | 75.00% |
| ItzSif vs Lee | 4–0 | 100.00% |
| ItzSif vs Zafina | 2–2 | 50.00% |
| ItzSif vs Jun | 4–0 | 100.00% |
| ItzSif vs Victor | 2–1 | 66.67% |
| ItzSif vs Bryan | 2–0 | 100.00% |
| ItzSif vs Jack-8 | 2–0 | 100.00% |
| ItzSif vs Claudio | 0–2 | 0.00% |
| ItzSif vs Eddy | 0–2 | 0.00% |
| ItzSif vs Lili | 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.