| Spellboy vs Kazuya | 67–67 | 50.00% |
| Spellboy vs Jin | 49–53 | 48.04% |
| Spellboy vs Paul | 42–53 | 44.21% |
| Spellboy vs King | 45–44 | 50.56% |
| Spellboy vs Bryan | 41–45 | 47.67% |
| Spellboy vs Dragunov | 44–37 | 54.32% |
| Spellboy vs Steve | 26–35 | 42.62% |
| Spellboy vs Law | 21–37 | 36.21% |
| Spellboy vs Fahkumram | 20–31 | 39.22% |
| Spellboy vs Victor | 27–22 | 55.10% |
| Spellboy vs Lili | 22–22 | 50.00% |
| Spellboy vs Yoshimitsu | 18–24 | 42.86% |
| Spellboy vs Armor King | 17–24 | 41.46% |
| Spellboy vs Heihachi | 17–21 | 44.74% |
| Spellboy vs Nina | 17–19 | 47.22% |
| Spellboy vs Devil Jin | 12–23 | 34.29% |
| Spellboy vs Azucena | 12–23 | 34.29% |
| Spellboy vs Hwoarang | 14–17 | 45.16% |
| Spellboy vs Clive | 13–15 | 46.43% |
| Spellboy vs Lee | 10–16 | 38.46% |
| Spellboy vs Reina | 14–10 | 58.33% |
| Spellboy vs Lars | 13–9 | 59.09% |
| Spellboy vs Asuka | 10–11 | 47.62% |
| Spellboy vs Anna | 8–10 | 44.44% |
| Spellboy vs Feng | 7–8 | 46.67% |
| Spellboy vs Claudio | 6–9 | 40.00% |
| Spellboy vs Lidia | 8–7 | 53.33% |
| Spellboy vs Leo | 5–9 | 35.71% |
| Spellboy vs Eddy | 9–4 | 69.23% |
| Spellboy vs Alisa | 2–10 | 16.67% |
| Spellboy vs Jack-8 | 6–4 | 60.00% |
| Spellboy vs Shaheen | 5–5 | 50.00% |
| Spellboy vs Kuma | 5–5 | 50.00% |
| Spellboy vs Raven | 3–5 | 37.50% |
| Spellboy vs Xiaoyu | 3–4 | 42.86% |
| Spellboy vs Leroy | 3–4 | 42.86% |
| Spellboy vs Jun | 3–4 | 42.86% |
| Spellboy vs Zafina | 0–6 | 0.00% |
| Spellboy vs Miary Zo | 0–2 | 0.00% |
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.