| Wellaard vs Kazuya | 56–61 | 47.86% |
| Wellaard vs Jin | 54–44 | 55.10% |
| Wellaard vs Clive | 46–51 | 47.42% |
| Wellaard vs King | 32–34 | 48.48% |
| Wellaard vs Reina | 37–29 | 56.06% |
| Wellaard vs Heihachi | 29–34 | 46.03% |
| Wellaard vs Dragunov | 36–25 | 59.02% |
| Wellaard vs Hwoarang | 33–25 | 56.90% |
| Wellaard vs Bryan | 25–27 | 48.08% |
| Wellaard vs Law | 33–13 | 71.74% |
| Wellaard vs Lili | 26–18 | 59.09% |
| Wellaard vs Jun | 20–23 | 46.51% |
| Wellaard vs Steve | 24–16 | 60.00% |
| Wellaard vs Devil Jin | 13–23 | 36.11% |
| Wellaard vs Yoshimitsu | 11–24 | 31.43% |
| Wellaard vs Azucena | 16–18 | 47.06% |
| Wellaard vs Victor | 17–14 | 54.84% |
| Wellaard vs Nina | 23–5 | 82.14% |
| Wellaard vs Fahkumram | 11–15 | 42.31% |
| Wellaard vs Lidia | 11–14 | 44.00% |
| Wellaard vs Lee | 12–11 | 52.17% |
| Wellaard vs Asuka | 10–11 | 47.62% |
| Wellaard vs Alisa | 7–13 | 35.00% |
| Wellaard vs Kuma | 6–13 | 31.58% |
| Wellaard vs Xiaoyu | 9–9 | 50.00% |
| Wellaard vs Paul | 8–9 | 47.06% |
| Wellaard vs Feng | 5–11 | 31.25% |
| Wellaard vs Leo | 7–9 | 43.75% |
| Wellaard vs Raven | 10–5–1 | 66.67% |
| Wellaard vs Eddy | 8–6 | 57.14% |
| Wellaard vs Anna | 6–8 | 42.86% |
| Wellaard vs Claudio | 9–3 | 75.00% |
| Wellaard vs Shaheen | 6–6 | 50.00% |
| Wellaard vs Lars | 5–5 | 50.00% |
| Wellaard vs Jack-8 | 6–3 | 66.67% |
| Wellaard vs Leroy | 6–3 | 66.67% |
| Wellaard vs Panda | 3–3 | 50.00% |
| Wellaard vs Zafina | 1–2 | 33.33% |
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.