| JOYBOY18 vs King | 8–11 | 42.11% |
| JOYBOY18 vs Jin | 6–7 | 46.15% |
| JOYBOY18 vs Law | 5–7 | 41.67% |
| JOYBOY18 vs Hwoarang | 7–4 | 63.64% |
| JOYBOY18 vs Lili | 8–3 | 72.73% |
| JOYBOY18 vs Devil Jin | 2–7 | 22.22% |
| JOYBOY18 vs Dragunov | 3–6 | 33.33% |
| JOYBOY18 vs Yoshimitsu | 5–3 | 62.50% |
| JOYBOY18 vs Reina | 4–4 | 50.00% |
| JOYBOY18 vs Xiaoyu | 5–2 | 71.43% |
| JOYBOY18 vs Alisa | 4–3 | 57.14% |
| JOYBOY18 vs Nina | 5–2 | 71.43% |
| JOYBOY18 vs Jun | 2–5 | 28.57% |
| JOYBOY18 vs Bryan | 2–4 | 33.33% |
| JOYBOY18 vs Steve | 5–0 | 100.00% |
| JOYBOY18 vs Lars | 2–3 | 40.00% |
| JOYBOY18 vs Lee | 3–2 | 60.00% |
| JOYBOY18 vs Claudio | 3–1 | 75.00% |
| JOYBOY18 vs Azucena | 3–1 | 75.00% |
| JOYBOY18 vs Victor | 3–1 | 75.00% |
| JOYBOY18 vs Paul | 1–2 | 33.33% |
| JOYBOY18 vs Kuma | 2–1 | 66.67% |
| JOYBOY18 vs Kazuya | 2–0 | 100.00% |
| JOYBOY18 vs Jack-8 | 2–0 | 100.00% |
| JOYBOY18 vs Feng | 1–1 | 50.00% |
| JOYBOY18 vs Leo | 2–0 | 100.00% |
| JOYBOY18 vs Zafina | 1–1 | 50.00% |
| JOYBOY18 vs Lidia | 1–1 | 50.00% |
| JOYBOY18 vs Leroy | 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.