| Ruffy vs King | 8–7 | 53.33% |
| Ruffy vs Steve | 6–5 | 54.55% |
| Ruffy vs Kazuya | 6–4 | 60.00% |
| Ruffy vs Jin | 3–6 | 33.33% |
| Ruffy vs Lars | 5–4 | 55.56% |
| Ruffy vs Lili | 4–4 | 50.00% |
| Ruffy vs Jun | 6–2 | 75.00% |
| Ruffy vs Hwoarang | 1–4 | 20.00% |
| Ruffy vs Bryan | 2–3 | 40.00% |
| Ruffy vs Dragunov | 1–4 | 20.00% |
| Ruffy vs Nina | 2–3 | 40.00% |
| Ruffy vs Reina | 4–1 | 80.00% |
| Ruffy vs Lidia | 3–2 | 60.00% |
| Ruffy vs Azucena | 2–2 | 50.00% |
| Ruffy vs Victor | 3–1 | 75.00% |
| Ruffy vs Raven | 2–2 | 50.00% |
| Ruffy vs Xiaoyu | 3–0 | 100.00% |
| Ruffy vs Alisa | 2–1 | 66.67% |
| Ruffy vs Claudio | 2–1 | 66.67% |
| Ruffy vs Anna | 2–1 | 66.67% |
| Ruffy vs Paul | 2–0 | 100.00% |
| Ruffy vs Law | 1–1 | 50.00% |
| Ruffy vs Heihachi | 0–2 | 0.00% |
| Ruffy vs Devil Jin | 1–0 | 100.00% |
| Ruffy vs Feng | 1–0 | 100.00% |
| Ruffy vs Lee | 1–0 | 100.00% |
| Ruffy vs Leroy | 1–0 | 100.00% |
| Ruffy vs Fahkumram | 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.