| Joyboy vs Law | 31–29 | 51.67% |
| Joyboy vs King | 35–20 | 63.64% |
| Joyboy vs Bryan | 22–29 | 43.14% |
| Joyboy vs Steve | 28–23 | 54.90% |
| Joyboy vs Eddy | 32–15 | 68.09% |
| Joyboy vs Jin | 33–12 | 73.33% |
| Joyboy vs Hwoarang | 24–18 | 57.14% |
| Joyboy vs Kazuya | 25–17 | 59.52% |
| Joyboy vs Lee | 24–16 | 60.00% |
| Joyboy vs Jun | 22–17 | 56.41% |
| Joyboy vs Victor | 22–17 | 56.41% |
| Joyboy vs Paul | 21–16 | 56.76% |
| Joyboy vs Azucena | 19–13 | 59.38% |
| Joyboy vs Lars | 14–16 | 46.67% |
| Joyboy vs Yoshimitsu | 18–10 | 64.29% |
| Joyboy vs Dragunov | 16–12 | 57.14% |
| Joyboy vs Reina | 18–10 | 64.29% |
| Joyboy vs Feng | 12–15 | 44.44% |
| Joyboy vs Xiaoyu | 10–12 | 45.45% |
| Joyboy vs Devil Jin | 18–4 | 81.82% |
| Joyboy vs Lili | 13–9 | 59.09% |
| Joyboy vs Asuka | 11–8 | 57.89% |
| Joyboy vs Nina | 12–6 | 66.67% |
| Joyboy vs Alisa | 7–9 | 43.75% |
| Joyboy vs Kuma | 8–8 | 50.00% |
| Joyboy vs Raven | 6–10 | 37.50% |
| Joyboy vs Claudio | 12–3 | 80.00% |
| Joyboy vs Leo | 7–7 | 50.00% |
| Joyboy vs Leroy | 7–5 | 58.33% |
| Joyboy vs Jack-8 | 6–3 | 66.67% |
| Joyboy vs Shaheen | 6–3 | 66.67% |
| Joyboy vs Lidia | 6–3 | 66.67% |
| Joyboy vs Heihachi | 6–3 | 66.67% |
| Joyboy vs Zafina | 5–3 | 62.50% |
| Joyboy vs Panda | 2–2 | 50.00% |
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.