| Slammy Sosa vs Bryan | 15–10 | 60.00% |
| Slammy Sosa vs Hwoarang | 10–13 | 43.48% |
| Slammy Sosa vs Steve | 14–9 | 60.87% |
| Slammy Sosa vs Reina | 11–11 | 50.00% |
| Slammy Sosa vs Kazuya | 14–7 | 66.67% |
| Slammy Sosa vs Law | 16–4 | 80.00% |
| Slammy Sosa vs King | 10–8 | 55.56% |
| Slammy Sosa vs Jin | 11–6 | 64.71% |
| Slammy Sosa vs Yoshimitsu | 6–10 | 37.50% |
| Slammy Sosa vs Dragunov | 11–5 | 68.75% |
| Slammy Sosa vs Feng | 8–6 | 57.14% |
| Slammy Sosa vs Lili | 5–9 | 35.71% |
| Slammy Sosa vs Lee | 8–4 | 66.67% |
| Slammy Sosa vs Lars | 5–6 | 45.45% |
| Slammy Sosa vs Azucena | 3–7 | 30.00% |
| Slammy Sosa vs Raven | 6–3 | 66.67% |
| Slammy Sosa vs Paul | 5–3 | 62.50% |
| Slammy Sosa vs Asuka | 2–6 | 25.00% |
| Slammy Sosa vs Alisa | 3–5 | 37.50% |
| Slammy Sosa vs Claudio | 4–4 | 50.00% |
| Slammy Sosa vs Zafina | 2–6 | 25.00% |
| Slammy Sosa vs Jun | 2–6 | 25.00% |
| Slammy Sosa vs Xiaoyu | 7–0 | 100.00% |
| Slammy Sosa vs Victor | 4–2 | 66.67% |
| Slammy Sosa vs Leo | 3–2 | 60.00% |
| Slammy Sosa vs Shaheen | 1–4 | 20.00% |
| Slammy Sosa vs Nina | 4–1 | 80.00% |
| Slammy Sosa vs Eddy | 2–3 | 40.00% |
| Slammy Sosa vs Devil Jin | 4–0 | 100.00% |
| Slammy Sosa vs Heihachi | 0–4 | 0.00% |
| Slammy Sosa vs Jack-8 | 1–2 | 33.33% |
| Slammy Sosa vs Leroy | 1–2 | 33.33% |
| Slammy Sosa vs Lidia | 0–2 | 0.00% |
| Slammy Sosa vs Panda | 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.