| Welson Wandela vs Jin | 11–17 | 39.29% |
| Welson Wandela vs Dragunov | 12–15 | 44.44% |
| Welson Wandela vs King | 12–12 | 50.00% |
| Welson Wandela vs Steve | 11–9 | 55.00% |
| Welson Wandela vs Lili | 11–9 | 55.00% |
| Welson Wandela vs Law | 6–10 | 37.50% |
| Welson Wandela vs Kazuya | 6–10 | 37.50% |
| Welson Wandela vs Reina | 4–12 | 25.00% |
| Welson Wandela vs Paul | 5–9 | 35.71% |
| Welson Wandela vs Hwoarang | 4–8 | 33.33% |
| Welson Wandela vs Bryan | 5–7 | 41.67% |
| Welson Wandela vs Lars | 7–5 | 58.33% |
| Welson Wandela vs Asuka | 1–10 | 9.09% |
| Welson Wandela vs Clive | 3–8 | 27.27% |
| Welson Wandela vs Eddy | 2–8 | 20.00% |
| Welson Wandela vs Yoshimitsu | 2–7 | 22.22% |
| Welson Wandela vs Fahkumram | 6–3 | 66.67% |
| Welson Wandela vs Claudio | 7–1 | 87.50% |
| Welson Wandela vs Jun | 6–2 | 75.00% |
| Welson Wandela vs Azucena | 6–2 | 75.00% |
| Welson Wandela vs Jack-8 | 3–4 | 42.86% |
| Welson Wandela vs Lee | 1–5 | 16.67% |
| Welson Wandela vs Leroy | 5–1 | 83.33% |
| Welson Wandela vs Lidia | 1–5 | 16.67% |
| Welson Wandela vs Leo | 2–3 | 40.00% |
| Welson Wandela vs Nina | 4–1 | 80.00% |
| Welson Wandela vs Anna | 2–3 | 40.00% |
| Welson Wandela vs Feng | 2–2 | 50.00% |
| Welson Wandela vs Victor | 2–2 | 50.00% |
| Welson Wandela vs Devil Jin | 2–1 | 66.67% |
| Welson Wandela vs Panda | 1–2 | 33.33% |
| Welson Wandela vs Heihachi | 2–1 | 66.67% |
| Welson Wandela vs Xiaoyu | 1–1 | 50.00% |
| Welson Wandela vs Alisa | 1–1 | 50.00% |
| Welson Wandela vs Kuma | 2–0 | 100.00% |
| Welson Wandela vs Shaheen | 1–0 | 100.00% |
| Welson Wandela vs Raven | 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.