| Proto vs King | 7–17 | 29.17% |
| Proto vs Steve | 14–6 | 70.00% |
| Proto vs Kazuya | 11–7 | 61.11% |
| Proto vs Fahkumram | 5–10 | 33.33% |
| Proto vs Devil Jin | 4–6 | 40.00% |
| Proto vs Jun | 8–2 | 80.00% |
| Proto vs Law | 4–5 | 44.44% |
| Proto vs Jin | 2–7 | 22.22% |
| Proto vs Bryan | 3–6 | 33.33% |
| Proto vs Hwoarang | 3–5 | 37.50% |
| Proto vs Lili | 2–6 | 25.00% |
| Proto vs Asuka | 6–1 | 85.71% |
| Proto vs Anna | 3–4 | 42.86% |
| Proto vs Azucena | 1–5 | 16.67% |
| Proto vs Raven | 2–4 | 33.33% |
| Proto vs Paul | 4–1 | 80.00% |
| Proto vs Yoshimitsu | 5–0 | 100.00% |
| Proto vs Zafina | 1–4 | 20.00% |
| Proto vs Eddy | 1–4 | 20.00% |
| Proto vs Feng | 2–2 | 50.00% |
| Proto vs Reina | 0–4 | 0.00% |
| Proto vs Heihachi | 0–4 | 0.00% |
| Proto vs Jack-8 | 2–1 | 66.67% |
| Proto vs Alisa | 2–1 | 66.67% |
| Proto vs Victor | 2–1 | 66.67% |
| Proto vs Leo | 1–1 | 50.00% |
| Proto vs Claudio | 2–0 | 100.00% |
| Proto vs Lee | 1–1 | 50.00% |
| Proto vs Clive | 0–2 | 0.00% |
| Proto vs Nina | 1–0 | 100.00% |
| Proto vs Kuma | 1–0 | 100.00% |
| Proto vs Armor King | 0–1 | 0.00% |
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.