| Mr Spiff vs King | 31–39 | 44.29% |
| Mr Spiff vs Steve | 36–27 | 57.14% |
| Mr Spiff vs Reina | 35–26 | 57.38% |
| Mr Spiff vs Jin | 23–26 | 46.94% |
| Mr Spiff vs Law | 29–19 | 60.42% |
| Mr Spiff vs Lars | 29–18 | 61.70% |
| Mr Spiff vs Hwoarang | 21–24 | 46.67% |
| Mr Spiff vs Kazuya | 29–16 | 64.44% |
| Mr Spiff vs Yoshimitsu | 24–19 | 55.81% |
| Mr Spiff vs Dragunov | 20–19 | 51.28% |
| Mr Spiff vs Bryan | 19–14 | 57.58% |
| Mr Spiff vs Lee | 18–15 | 54.55% |
| Mr Spiff vs Nina | 21–10 | 67.74% |
| Mr Spiff vs Paul | 21–9 | 70.00% |
| Mr Spiff vs Xiaoyu | 17–11 | 60.71% |
| Mr Spiff vs Asuka | 12–16 | 42.86% |
| Mr Spiff vs Victor | 13–15 | 46.43% |
| Mr Spiff vs Eddy | 20–8 | 71.43% |
| Mr Spiff vs Azucena | 11–14 | 44.00% |
| Mr Spiff vs Raven | 14–11 | 56.00% |
| Mr Spiff vs Leroy | 5–18 | 21.74% |
| Mr Spiff vs Jack-8 | 12–10 | 54.55% |
| Mr Spiff vs Lili | 12–10 | 54.55% |
| Mr Spiff vs Leo | 17–4 | 80.95% |
| Mr Spiff vs Zafina | 14–7 | 66.67% |
| Mr Spiff vs Kuma | 7–12 | 36.84% |
| Mr Spiff vs Jun | 9–10 | 47.37% |
| Mr Spiff vs Claudio | 13–5 | 72.22% |
| Mr Spiff vs Devil Jin | 8–8 | 50.00% |
| Mr Spiff vs Feng | 7–6 | 53.85% |
| Mr Spiff vs Alisa | 6–4 | 60.00% |
| Mr Spiff vs Shaheen | 3–7 | 30.00% |
| Mr Spiff vs Heihachi | 3–5 | 37.50% |
| Mr Spiff vs Panda | 3–0 | 100.00% |
| Mr Spiff vs Lidia | 2–1 | 66.67% |
| Mr Spiff vs Clive | 0–1 | 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.