| Southside vs Lidia | 34–38 | 47.22% |
| Southside vs Jin | 29–27 | 51.79% |
| Southside vs King | 23–30 | 43.40% |
| Southside vs Reina | 23–24 | 48.94% |
| Southside vs Dragunov | 25–20–1 | 55.56% |
| Southside vs Hwoarang | 21–17 | 55.26% |
| Southside vs Kazuya | 15–19 | 44.12% |
| Southside vs Steve | 16–15 | 51.61% |
| Southside vs Paul | 18–12 | 60.00% |
| Southside vs Eddy | 22–6 | 78.57% |
| Southside vs Bryan | 11–16 | 40.74% |
| Southside vs Nina | 13–12–1 | 52.00% |
| Southside vs Law | 12–12 | 50.00% |
| Southside vs Azucena | 9–13 | 40.91% |
| Southside vs Jun | 11–10 | 52.38% |
| Southside vs Claudio | 13–7 | 65.00% |
| Southside vs Lars | 8–11 | 42.11% |
| Southside vs Lili | 12–5 | 70.59% |
| Southside vs Yoshimitsu | 9–7 | 56.25% |
| Southside vs Feng | 6–9 | 40.00% |
| Southside vs Devil Jin | 6–8 | 42.86% |
| Southside vs Leroy | 10–4 | 71.43% |
| Southside vs Lee | 6–7 | 46.15% |
| Southside vs Alisa | 4–8 | 33.33% |
| Southside vs Asuka | 8–2 | 80.00% |
| Southside vs Victor | 7–3 | 70.00% |
| Southside vs Leo | 3–5 | 37.50% |
| Southside vs Heihachi | 5–3 | 62.50% |
| Southside vs Jack-8 | 5–2 | 71.43% |
| Southside vs Zafina | 5–2 | 71.43% |
| Southside vs Xiaoyu | 3–3 | 50.00% |
| Southside vs Raven | 3–2 | 60.00% |
| Southside vs Shaheen | 1–3 | 25.00% |
| Southside vs Kuma | 0–3 | 0.00% |
| Southside vs Fahkumram | 3–0 | 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.