| RoundHead vs Jin | 42–41 | 50.60% |
| RoundHead vs King | 42–36 | 53.85% |
| RoundHead vs Reina | 40–30 | 57.14% |
| RoundHead vs Steve | 36–31 | 53.73% |
| RoundHead vs Kazuya | 30–31 | 49.18% |
| RoundHead vs Hwoarang | 29–25 | 53.70% |
| RoundHead vs Bryan | 27–27 | 50.00% |
| RoundHead vs Lili | 26–18 | 59.09% |
| RoundHead vs Law | 17–20 | 45.95% |
| RoundHead vs Jun | 18–14 | 56.25% |
| RoundHead vs Azucena | 17–14 | 54.84% |
| RoundHead vs Dragunov | 13–17 | 43.33% |
| RoundHead vs Nina | 16–13 | 55.17% |
| RoundHead vs Lars | 16–12 | 57.14% |
| RoundHead vs Heihachi | 12–16 | 42.86% |
| RoundHead vs Anna | 16–12 | 57.14% |
| RoundHead vs Asuka | 14–12 | 53.85% |
| RoundHead vs Eddy | 9–17 | 34.62% |
| RoundHead vs Alisa | 6–18 | 25.00% |
| RoundHead vs Devil Jin | 7–16 | 30.43% |
| RoundHead vs Lee | 8–14 | 36.36% |
| RoundHead vs Victor | 7–15 | 31.82% |
| RoundHead vs Paul | 11–10 | 52.38% |
| RoundHead vs Yoshimitsu | 13–7 | 65.00% |
| RoundHead vs Clive | 7–11 | 38.89% |
| RoundHead vs Claudio | 8–8 | 50.00% |
| RoundHead vs Xiaoyu | 8–7 | 53.33% |
| RoundHead vs Shaheen | 9–6 | 60.00% |
| RoundHead vs Lidia | 7–7 | 50.00% |
| RoundHead vs Leo | 6–6 | 50.00% |
| RoundHead vs Raven | 5–7 | 41.67% |
| RoundHead vs Panda | 4–6 | 40.00% |
| RoundHead vs Jack-8 | 3–6 | 33.33% |
| RoundHead vs Zafina | 5–4 | 55.56% |
| RoundHead vs Kuma | 3–5 | 37.50% |
| RoundHead vs Fahkumram | 0–8 | 0.00% |
| RoundHead vs Leroy | 3–4 | 42.86% |
| RoundHead vs Feng | 3–2 | 60.00% |
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.