| Kevin_Mask vs Hwoarang | 20–6 | 76.92% |
| Kevin_Mask vs Lili | 22–4 | 84.62% |
| Kevin_Mask vs Paul | 15–7 | 68.18% |
| Kevin_Mask vs Dragunov | 18–3 | 85.71% |
| Kevin_Mask vs Reina | 9–11 | 45.00% |
| Kevin_Mask vs Asuka | 11–8 | 57.89% |
| Kevin_Mask vs Victor | 14–3 | 82.35% |
| Kevin_Mask vs King | 10–5 | 66.67% |
| Kevin_Mask vs Kazuya | 9–6 | 60.00% |
| Kevin_Mask vs Steve | 13–2 | 86.67% |
| Kevin_Mask vs Lars | 6–9 | 40.00% |
| Kevin_Mask vs Bryan | 11–3 | 78.57% |
| Kevin_Mask vs Eddy | 9–5 | 64.29% |
| Kevin_Mask vs Claudio | 9–3 | 75.00% |
| Kevin_Mask vs Azucena | 6–6 | 50.00% |
| Kevin_Mask vs Law | 10–1 | 90.91% |
| Kevin_Mask vs Jun | 6–5 | 54.55% |
| Kevin_Mask vs Yoshimitsu | 4–6 | 40.00% |
| Kevin_Mask vs Jin | 7–3 | 70.00% |
| Kevin_Mask vs Lee | 6–4 | 60.00% |
| Kevin_Mask vs Devil Jin | 5–4 | 55.56% |
| Kevin_Mask vs Alisa | 8–1 | 88.89% |
| Kevin_Mask vs Feng | 4–4 | 50.00% |
| Kevin_Mask vs Nina | 6–2 | 75.00% |
| Kevin_Mask vs Jack-8 | 5–2 | 71.43% |
| Kevin_Mask vs Leroy | 7–0 | 100.00% |
| Kevin_Mask vs Lidia | 4–1 | 80.00% |
| Kevin_Mask vs Heihachi | 4–1 | 80.00% |
| Kevin_Mask vs Xiaoyu | 3–1 | 75.00% |
| Kevin_Mask vs Kuma | 2–2 | 50.00% |
| Kevin_Mask vs Shaheen | 3–0 | 100.00% |
| Kevin_Mask vs Zafina | 2–1 | 66.67% |
| Kevin_Mask vs Anna | 3–0 | 100.00% |
| Kevin_Mask vs Leo | 2–0 | 100.00% |
| Kevin_Mask vs Raven | 1–1 | 50.00% |
| Kevin_Mask vs Armor King | 1–0 | 100.00% |
| Kevin_Mask vs Miary Zo | 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.