| JoyBoy vs King | 17–13 | 56.67% |
| JoyBoy vs Eddy | 12–10 | 54.55% |
| JoyBoy vs Reina | 8–5 | 61.54% |
| JoyBoy vs Hwoarang | 6–5 | 54.55% |
| JoyBoy vs Law | 8–2 | 80.00% |
| JoyBoy vs Yoshimitsu | 3–7 | 30.00% |
| JoyBoy vs Devil Jin | 7–3 | 70.00% |
| JoyBoy vs Shaheen | 5–5 | 50.00% |
| JoyBoy vs Jin | 4–5 | 44.44% |
| JoyBoy vs Kazuya | 6–3 | 66.67% |
| JoyBoy vs Steve | 4–5 | 44.44% |
| JoyBoy vs Dragunov | 3–6 | 33.33% |
| JoyBoy vs Nina | 2–6 | 25.00% |
| JoyBoy vs Jun | 5–2 | 71.43% |
| JoyBoy vs Azucena | 3–4 | 42.86% |
| JoyBoy vs Victor | 3–3 | 50.00% |
| JoyBoy vs Asuka | 1–4 | 20.00% |
| JoyBoy vs Lili | 0–5 | 0.00% |
| JoyBoy vs Lidia | 1–4 | 20.00% |
| JoyBoy vs Lars | 2–2 | 50.00% |
| JoyBoy vs Leroy | 4–0 | 100.00% |
| JoyBoy vs Xiaoyu | 1–2 | 33.33% |
| JoyBoy vs Bryan | 1–2 | 33.33% |
| JoyBoy vs Alisa | 1–2 | 33.33% |
| JoyBoy vs Zafina | 0–3 | 0.00% |
| JoyBoy vs Raven | 0–3 | 0.00% |
| JoyBoy vs Paul | 0–2 | 0.00% |
| JoyBoy vs Leo | 1–1 | 50.00% |
| JoyBoy vs Heihachi | 2–0 | 100.00% |
| JoyBoy vs Lee | 1–0 | 100.00% |
| JoyBoy vs Armor King | 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.