| Walmir F. Wei vs Jin | 158–195 | 44.76% |
| Walmir F. Wei vs Kazuya | 169–173 | 49.42% |
| Walmir F. Wei vs King | 138–198 | 41.07% |
| Walmir F. Wei vs Bryan | 110–133–1 | 45.27% |
| Walmir F. Wei vs Reina | 114–126 | 47.50% |
| Walmir F. Wei vs Steve | 111–113 | 49.55% |
| Walmir F. Wei vs Heihachi | 108–113 | 48.87% |
| Walmir F. Wei vs Armor King | 77–125 | 38.12% |
| Walmir F. Wei vs Law | 81–113 | 41.75% |
| Walmir F. Wei vs Dragunov | 63–123 | 33.87% |
| Walmir F. Wei vs Eddy | 75–85 | 46.88% |
| Walmir F. Wei vs Hwoarang | 56–99 | 36.13% |
| Walmir F. Wei vs Asuka | 59–94 | 38.56% |
| Walmir F. Wei vs Lili | 73–72 | 50.34% |
| Walmir F. Wei vs Xiaoyu | 66–55 | 54.55% |
| Walmir F. Wei vs Devil Jin | 61–60 | 50.41% |
| Walmir F. Wei vs Paul | 59–60 | 49.58% |
| Walmir F. Wei vs Lee | 55–64 | 46.22% |
| Walmir F. Wei vs Clive | 37–75 | 33.04% |
| Walmir F. Wei vs Lidia | 46–62 | 42.59% |
| Walmir F. Wei vs Nina | 44–52 | 45.83% |
| Walmir F. Wei vs Leroy | 49–47 | 51.04% |
| Walmir F. Wei vs Azucena | 39–55 | 41.49% |
| Walmir F. Wei vs Victor | 42–49 | 46.15% |
| Walmir F. Wei vs Yoshimitsu | 44–42 | 51.16% |
| Walmir F. Wei vs Alisa | 37–49 | 43.02% |
| Walmir F. Wei vs Anna | 36–45 | 44.44% |
| Walmir F. Wei vs Lars | 33–47 | 41.25% |
| Walmir F. Wei vs Feng | 40–39 | 50.63% |
| Walmir F. Wei vs Fahkumram | 35–43 | 44.87% |
| Walmir F. Wei vs Miary Zo | 22–56 | 28.21% |
| Walmir F. Wei vs Jun | 37–28 | 56.92% |
| Walmir F. Wei vs Leo | 28–25 | 52.83% |
| Walmir F. Wei vs Claudio | 20–27 | 42.55% |
| Walmir F. Wei vs Raven | 23–24 | 48.94% |
| Walmir F. Wei vs Jack-8 | 18–28 | 39.13% |
| Walmir F. Wei vs Zafina | 16–17 | 48.48% |
| Walmir F. Wei vs Shaheen | 7–16 | 30.43% |
| Walmir F. Wei vs Kuma | 8–13 | 38.10% |
| Walmir F. Wei vs Panda | 5–10 | 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.