| Ballboy vs Dragunov | 15–24 | 38.46% |
| Ballboy vs Victor | 23–16 | 58.97% |
| Ballboy vs Kazuya | 21–11 | 65.62% |
| Ballboy vs King | 21–10 | 67.74% |
| Ballboy vs Jin | 14–15 | 48.28% |
| Ballboy vs Hwoarang | 10–16 | 38.46% |
| Ballboy vs Bryan | 12–13 | 48.00% |
| Ballboy vs Law | 6–15 | 28.57% |
| Ballboy vs Reina | 10–10 | 50.00% |
| Ballboy vs Yoshimitsu | 5–13 | 27.78% |
| Ballboy vs Lili | 9–7 | 56.25% |
| Ballboy vs Alisa | 7–9 | 43.75% |
| Ballboy vs Devil Jin | 5–7 | 41.67% |
| Ballboy vs Feng | 6–5 | 54.55% |
| Ballboy vs Leo | 4–7 | 36.36% |
| Ballboy vs Jun | 8–2 | 80.00% |
| Ballboy vs Asuka | 6–2 | 75.00% |
| Ballboy vs Eddy | 4–4 | 50.00% |
| Ballboy vs Steve | 6–1 | 85.71% |
| Ballboy vs Kuma | 2–4 | 33.33% |
| Ballboy vs Paul | 2–3 | 40.00% |
| Ballboy vs Jack-8 | 4–1 | 80.00% |
| Ballboy vs Lee | 4–1 | 80.00% |
| Ballboy vs Claudio | 2–2 | 50.00% |
| Ballboy vs Azucena | 2–2 | 50.00% |
| Ballboy vs Xiaoyu | 3–0 | 100.00% |
| Ballboy vs Zafina | 2–1 | 66.67% |
| Ballboy vs Leroy | 2–1 | 66.67% |
| Ballboy vs Raven | 3–0 | 100.00% |
| Ballboy vs Lars | 0–2 | 0.00% |
| Ballboy vs Shaheen | 1–1 | 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.