| Kay-Samuels vs Kazuya | 36–50 | 41.86% |
| Kay-Samuels vs Jin | 45–32 | 58.44% |
| Kay-Samuels vs Eddy | 33–41 | 44.59% |
| Kay-Samuels vs King | 22–31 | 41.51% |
| Kay-Samuels vs Hwoarang | 27–22 | 55.10% |
| Kay-Samuels vs Dragunov | 27–14 | 65.85% |
| Kay-Samuels vs Reina | 25–12 | 67.57% |
| Kay-Samuels vs Steve | 21–15 | 58.33% |
| Kay-Samuels vs Victor | 21–15 | 58.33% |
| Kay-Samuels vs Lili | 23–12 | 65.71% |
| Kay-Samuels vs Law | 16–18 | 47.06% |
| Kay-Samuels vs Bryan | 17–15 | 53.12% |
| Kay-Samuels vs Jun | 10–20 | 33.33% |
| Kay-Samuels vs Azucena | 17–11 | 60.71% |
| Kay-Samuels vs Yoshimitsu | 17–10 | 62.96% |
| Kay-Samuels vs Nina | 15–11 | 57.69% |
| Kay-Samuels vs Lee | 13–11 | 54.17% |
| Kay-Samuels vs Xiaoyu | 14–9 | 60.87% |
| Kay-Samuels vs Paul | 13–8 | 61.90% |
| Kay-Samuels vs Alisa | 11–7 | 61.11% |
| Kay-Samuels vs Leroy | 11–6 | 64.71% |
| Kay-Samuels vs Heihachi | 7–10 | 41.18% |
| Kay-Samuels vs Asuka | 8–8 | 50.00% |
| Kay-Samuels vs Devil Jin | 5–11 | 31.25% |
| Kay-Samuels vs Raven | 9–6 | 60.00% |
| Kay-Samuels vs Leo | 9–5 | 64.29% |
| Kay-Samuels vs Lars | 7–5 | 58.33% |
| Kay-Samuels vs Jack-8 | 4–7 | 36.36% |
| Kay-Samuels vs Zafina | 8–3 | 72.73% |
| Kay-Samuels vs Lidia | 7–2 | 77.78% |
| Kay-Samuels vs Feng | 6–2 | 75.00% |
| Kay-Samuels vs Claudio | 3–4 | 42.86% |
| Kay-Samuels vs Shaheen | 4–2 | 66.67% |
| Kay-Samuels vs Armor King | 2–4 | 33.33% |
| Kay-Samuels vs Fahkumram | 2–2 | 50.00% |
| Kay-Samuels vs Anna | 1–2 | 33.33% |
| Kay-Samuels vs Kuma | 2–0 | 100.00% |
| Kay-Samuels vs Panda | 0–2 | 0.00% |
| Kay-Samuels vs Clive | 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.