| Welchy vs Jin | 68–88 | 43.59% |
| Welchy vs Kazuya | 64–78 | 45.07% |
| Welchy vs King | 53–68 | 43.80% |
| Welchy vs Hwoarang | 58–50 | 53.70% |
| Welchy vs Law | 57–41 | 58.16% |
| Welchy vs Paul | 36–40 | 47.37% |
| Welchy vs Steve | 28–40 | 41.18% |
| Welchy vs Bryan | 30–35 | 46.15% |
| Welchy vs Lili | 36–29 | 55.38% |
| Welchy vs Reina | 28–28 | 50.00% |
| Welchy vs Dragunov | 22–33 | 40.00% |
| Welchy vs Yoshimitsu | 18–31 | 36.73% |
| Welchy vs Eddy | 25–23 | 52.08% |
| Welchy vs Lars | 21–25 | 45.65% |
| Welchy vs Jun | 21–23 | 47.73% |
| Welchy vs Devil Jin | 23–20 | 53.49% |
| Welchy vs Victor | 23–18 | 56.10% |
| Welchy vs Xiaoyu | 21–17 | 55.26% |
| Welchy vs Lee | 16–19 | 45.71% |
| Welchy vs Alisa | 10–23 | 30.30% |
| Welchy vs Nina | 21–12 | 63.64% |
| Welchy vs Asuka | 14–16 | 46.67% |
| Welchy vs Heihachi | 11–18 | 37.93% |
| Welchy vs Feng | 13–13 | 50.00% |
| Welchy vs Azucena | 16–10 | 61.54% |
| Welchy vs Jack-8 | 10–12 | 45.45% |
| Welchy vs Raven | 10–10 | 50.00% |
| Welchy vs Leroy | 6–11 | 35.29% |
| Welchy vs Leo | 5–8 | 38.46% |
| Welchy vs Zafina | 4–8 | 33.33% |
| Welchy vs Lidia | 3–9 | 25.00% |
| Welchy vs Armor King | 4–8 | 33.33% |
| Welchy vs Claudio | 4–6 | 40.00% |
| Welchy vs Kuma | 2–7 | 22.22% |
| Welchy vs Panda | 4–4 | 50.00% |
| Welchy vs Clive | 4–4 | 50.00% |
| Welchy vs Fahkumram | 3–5 | 37.50% |
| Welchy vs Shaheen | 4–1 | 80.00% |
| Welchy vs Anna | 3–0 | 100.00% |
| Welchy vs Miary Zo | 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.