| Careless vs Reina | 30–75 | 28.57% |
| Careless vs Jin | 29–75 | 27.88% |
| Careless vs King | 19–67 | 22.09% |
| Careless vs Kazuya | 23–61 | 27.38% |
| Careless vs Lili | 25–45 | 35.71% |
| Careless vs Steve | 10–43 | 18.87% |
| Careless vs Bryan | 14–37 | 27.45% |
| Careless vs Yoshimitsu | 22–28 | 44.00% |
| Careless vs Hwoarang | 23–25 | 47.92% |
| Careless vs Jun | 14–34 | 29.17% |
| Careless vs Law | 14–31 | 31.11% |
| Careless vs Victor | 13–29 | 30.95% |
| Careless vs Dragunov | 13–27 | 32.50% |
| Careless vs Lee | 13–27 | 32.50% |
| Careless vs Eddy | 13–24 | 35.14% |
| Careless vs Asuka | 14–22 | 38.89% |
| Careless vs Leo | 15–16 | 48.39% |
| Careless vs Xiaoyu | 8–22 | 26.67% |
| Careless vs Feng | 6–22 | 21.43% |
| Careless vs Azucena | 14–14 | 50.00% |
| Careless vs Devil Jin | 10–17 | 37.04% |
| Careless vs Nina | 9–17 | 34.62% |
| Careless vs Alisa | 10–15 | 40.00% |
| Careless vs Lars | 7–17 | 29.17% |
| Careless vs Paul | 12–10 | 54.55% |
| Careless vs Raven | 3–11 | 21.43% |
| Careless vs Kuma | 2–11 | 15.38% |
| Careless vs Claudio | 6–6 | 50.00% |
| Careless vs Leroy | 6–5 | 54.55% |
| Careless vs Lidia | 5–6 | 45.45% |
| Careless vs Jack-8 | 4–5 | 44.44% |
| Careless vs Shaheen | 2–7 | 22.22% |
| Careless vs Zafina | 1–6 | 14.29% |
| Careless vs Panda | 0–2 | 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.