| Careless vs King | 39–8 | 82.98% |
| Careless vs Jin | 32–12 | 72.73% |
| Careless vs Kazuya | 32–9 | 78.05% |
| Careless vs Reina | 18–20 | 47.37% |
| Careless vs Lili | 21–12 | 63.64% |
| Careless vs Paul | 22–9 | 70.97% |
| Careless vs Bryan | 17–9 | 65.38% |
| Careless vs Lee | 14–7 | 66.67% |
| Careless vs Eddy | 11–8 | 57.89% |
| Careless vs Steve | 11–6 | 64.71% |
| Careless vs Devil Jin | 12–4 | 75.00% |
| Careless vs Law | 10–5 | 66.67% |
| Careless vs Feng | 11–3 | 78.57% |
| Careless vs Leroy | 7–7 | 50.00% |
| Careless vs Yoshimitsu | 7–6 | 53.85% |
| Careless vs Hwoarang | 8–5 | 61.54% |
| Careless vs Lars | 7–6 | 53.85% |
| Careless vs Claudio | 9–4 | 69.23% |
| Careless vs Asuka | 6–6 | 50.00% |
| Careless vs Dragunov | 9–2 | 81.82% |
| Careless vs Alisa | 4–7 | 36.36% |
| Careless vs Jun | 8–3 | 72.73% |
| Careless vs Nina | 8–1 | 88.89% |
| Careless vs Leo | 7–1 | 87.50% |
| Careless vs Kuma | 3–5 | 37.50% |
| Careless vs Zafina | 3–5 | 37.50% |
| Careless vs Xiaoyu | 1–6 | 14.29% |
| Careless vs Shaheen | 3–2 | 60.00% |
| Careless vs Victor | 4–1 | 80.00% |
| Careless vs Jack-8 | 2–2 | 50.00% |
| Careless vs Lidia | 3–1 | 75.00% |
| Careless vs Raven | 2–0 | 100.00% |
| Careless vs Azucena | 1–0 | 100.00% |
| Careless vs Heihachi | 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.