| Yummi Willy vs Hwoarang | 20–10 | 66.67% |
| Yummi Willy vs Jin | 17–10 | 62.96% |
| Yummi Willy vs Eddy | 9–17 | 34.62% |
| Yummi Willy vs Dragunov | 11–14 | 44.00% |
| Yummi Willy vs Steve | 13–10 | 56.52% |
| Yummi Willy vs Lili | 13–10 | 56.52% |
| Yummi Willy vs King | 8–14 | 36.36% |
| Yummi Willy vs Bryan | 12–9 | 57.14% |
| Yummi Willy vs Feng | 12–9 | 57.14% |
| Yummi Willy vs Reina | 17–3 | 85.00% |
| Yummi Willy vs Lars | 9–10 | 47.37% |
| Yummi Willy vs Yoshimitsu | 14–4 | 77.78% |
| Yummi Willy vs Kazuya | 14–2 | 87.50% |
| Yummi Willy vs Devil Jin | 12–4 | 75.00% |
| Yummi Willy vs Victor | 8–6 | 57.14% |
| Yummi Willy vs Asuka | 8–5 | 61.54% |
| Yummi Willy vs Paul | 5–7 | 41.67% |
| Yummi Willy vs Jun | 6–5 | 54.55% |
| Yummi Willy vs Heihachi | 7–3 | 70.00% |
| Yummi Willy vs Jack-8 | 4–3 | 57.14% |
| Yummi Willy vs Fahkumram | 6–1 | 85.71% |
| Yummi Willy vs Law | 2–4 | 33.33% |
| Yummi Willy vs Alisa | 5–1 | 83.33% |
| Yummi Willy vs Kuma | 0–6 | 0.00% |
| Yummi Willy vs Azucena | 4–2 | 66.67% |
| Yummi Willy vs Lidia | 4–2 | 66.67% |
| Yummi Willy vs Nina | 1–3 | 25.00% |
| Yummi Willy vs Lee | 2–2 | 50.00% |
| Yummi Willy vs Claudio | 1–2 | 33.33% |
| Yummi Willy vs Shaheen | 1–2 | 33.33% |
| Yummi Willy vs Raven | 1–2 | 33.33% |
| Yummi Willy vs Panda | 0–2 | 0.00% |
| Yummi Willy vs Zafina | 0–2 | 0.00% |
| Yummi Willy vs Clive | 1–0 | 100.00% |
| Yummi Willy vs Anna | 1–0 | 100.00% |
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.