| Careless vs King | 25–34 | 42.37% |
| Careless vs Jin | 19–36 | 34.55% |
| Careless vs Law | 18–18 | 50.00% |
| Careless vs Steve | 19–15 | 55.88% |
| Careless vs Paul | 13–20 | 39.39% |
| Careless vs Kazuya | 15–16 | 48.39% |
| Careless vs Devil Jin | 14–10 | 58.33% |
| Careless vs Dragunov | 6–15 | 28.57% |
| Careless vs Hwoarang | 7–13 | 35.00% |
| Careless vs Bryan | 9–9 | 50.00% |
| Careless vs Nina | 7–11 | 38.89% |
| Careless vs Claudio | 5–9 | 35.71% |
| Careless vs Anna | 9–5 | 64.29% |
| Careless vs Fahkumram | 4–10 | 28.57% |
| Careless vs Jun | 6–7 | 46.15% |
| Careless vs Heihachi | 4–9 | 30.77% |
| Careless vs Lars | 8–4 | 66.67% |
| Careless vs Yoshimitsu | 4–7 | 36.36% |
| Careless vs Reina | 6–5 | 54.55% |
| Careless vs Lili | 6–4 | 60.00% |
| Careless vs Victor | 5–5 | 50.00% |
| Careless vs Eddy | 0–10 | 0.00% |
| Careless vs Alisa | 7–2 | 77.78% |
| Careless vs Jack-8 | 4–4 | 50.00% |
| Careless vs Asuka | 2–4 | 33.33% |
| Careless vs Leroy | 4–2 | 66.67% |
| Careless vs Kuma | 2–3 | 40.00% |
| Careless vs Azucena | 2–3 | 40.00% |
| Careless vs Lee | 0–4 | 0.00% |
| Careless vs Raven | 4–0 | 100.00% |
| Careless vs Clive | 1–3 | 25.00% |
| Careless vs Leo | 2–0 | 100.00% |
| Careless vs Shaheen | 2–0 | 100.00% |
| Careless vs Zafina | 0–2 | 0.00% |
| Careless vs Xiaoyu | 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.