| Wellander vs Steve | 17–23 | 42.50% |
| Wellander vs Jin | 16–22 | 42.11% |
| Wellander vs King | 19–18 | 51.35% |
| Wellander vs Kazuya | 15–20 | 42.86% |
| Wellander vs Eddy | 3–32 | 8.57% |
| Wellander vs Reina | 20–14 | 58.82% |
| Wellander vs Hwoarang | 9–14 | 39.13% |
| Wellander vs Lee | 10–8 | 55.56% |
| Wellander vs Asuka | 8–8 | 50.00% |
| Wellander vs Yoshimitsu | 6–8 | 42.86% |
| Wellander vs Feng | 2–12 | 14.29% |
| Wellander vs Law | 8–5 | 61.54% |
| Wellander vs Jun | 7–6 | 53.85% |
| Wellander vs Kuma | 2–10 | 16.67% |
| Wellander vs Xiaoyu | 4–7 | 36.36% |
| Wellander vs Bryan | 5–6 | 45.45% |
| Wellander vs Leroy | 3–8 | 27.27% |
| Wellander vs Victor | 2–9 | 18.18% |
| Wellander vs Lars | 5–5 | 50.00% |
| Wellander vs Claudio | 2–8 | 20.00% |
| Wellander vs Raven | 2–8 | 20.00% |
| Wellander vs Lili | 4–4 | 50.00% |
| Wellander vs Dragunov | 0–8 | 0.00% |
| Wellander vs Shaheen | 2–5 | 28.57% |
| Wellander vs Azucena | 3–4 | 42.86% |
| Wellander vs Alisa | 1–5 | 16.67% |
| Wellander vs Zafina | 2–4 | 33.33% |
| Wellander vs Nina | 2–3 | 40.00% |
| Wellander vs Paul | 0–4 | 0.00% |
| Wellander vs Jack-8 | 3–1 | 75.00% |
| Wellander vs Devil Jin | 0–3 | 0.00% |
| Wellander vs Lidia | 1–2 | 33.33% |
| Wellander vs Leo | 0–2 | 0.00% |
| Wellander vs Panda | 0–2 | 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.