| Kalen Ruffing vs King | 33–84 | 28.21% |
| Kalen Ruffing vs Steve | 26–70 | 27.08% |
| Kalen Ruffing vs Reina | 26–55 | 32.10% |
| Kalen Ruffing vs Jin | 23–54 | 29.87% |
| Kalen Ruffing vs Azucena | 24–47 | 33.80% |
| Kalen Ruffing vs Law | 16–39 | 29.09% |
| Kalen Ruffing vs Dragunov | 21–33 | 38.89% |
| Kalen Ruffing vs Eddy | 10–44 | 18.52% |
| Kalen Ruffing vs Hwoarang | 14–39 | 26.42% |
| Kalen Ruffing vs Lili | 13–39 | 25.00% |
| Kalen Ruffing vs Bryan | 11–37 | 22.92% |
| Kalen Ruffing vs Armor King | 12–36 | 25.00% |
| Kalen Ruffing vs Kazuya | 14–33 | 29.79% |
| Kalen Ruffing vs Jun | 10–37 | 21.28% |
| Kalen Ruffing vs Clive | 14–33 | 29.79% |
| Kalen Ruffing vs Yoshimitsu | 11–30 | 26.83% |
| Kalen Ruffing vs Victor | 13–28 | 31.71% |
| Kalen Ruffing vs Lee | 10–30 | 25.00% |
| Kalen Ruffing vs Anna | 14–21 | 40.00% |
| Kalen Ruffing vs Fahkumram | 11–24 | 31.43% |
| Kalen Ruffing vs Lars | 9–24 | 27.27% |
| Kalen Ruffing vs Heihachi | 9–23 | 28.12% |
| Kalen Ruffing vs Lidia | 5–26 | 16.13% |
| Kalen Ruffing vs Devil Jin | 8–20 | 28.57% |
| Kalen Ruffing vs Nina | 9–18 | 33.33% |
| Kalen Ruffing vs Leroy | 6–20 | 23.08% |
| Kalen Ruffing vs Xiaoyu | 5–19 | 20.83% |
| Kalen Ruffing vs Alisa | 4–20 | 16.67% |
| Kalen Ruffing vs Jack-8 | 5–16 | 23.81% |
| Kalen Ruffing vs Feng | 9–11 | 45.00% |
| Kalen Ruffing vs Leo | 2–18 | 10.00% |
| Kalen Ruffing vs Asuka | 5–14 | 26.32% |
| Kalen Ruffing vs Claudio | 7–10 | 41.18% |
| Kalen Ruffing vs Raven | 4–13 | 23.53% |
| Kalen Ruffing vs Paul | 8–6 | 57.14% |
| Kalen Ruffing vs Shaheen | 0–14 | 0.00% |
| Kalen Ruffing vs Zafina | 4–5 | 44.44% |
| Kalen Ruffing vs Kuma | 0–7 | 0.00% |
| Kalen Ruffing vs Miary Zo | 0–3 | 0.00% |
| Kalen Ruffing vs Panda | 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.