| Heefnoff vs Bryan | 106–47 | 69.28% |
| Heefnoff vs Kazuya | 86–56 | 60.56% |
| Heefnoff vs Jin | 73–46 | 61.34% |
| Heefnoff vs Jun | 62–40 | 60.78% |
| Heefnoff vs Reina | 65–35 | 65.00% |
| Heefnoff vs Law | 59–38 | 60.82% |
| Heefnoff vs Paul | 59–34 | 63.44% |
| Heefnoff vs Lee | 61–32 | 65.59% |
| Heefnoff vs King | 67–22 | 75.28% |
| Heefnoff vs Hwoarang | 57–29 | 66.28% |
| Heefnoff vs Steve | 50–30 | 62.50% |
| Heefnoff vs Lili | 56–24 | 70.00% |
| Heefnoff vs Lars | 51–20 | 71.83% |
| Heefnoff vs Yoshimitsu | 39–29 | 57.35% |
| Heefnoff vs Dragunov | 50–17–1 | 74.63% |
| Heefnoff vs Devil Jin | 48–18 | 72.73% |
| Heefnoff vs Armor King | 48–18 | 72.73% |
| Heefnoff vs Heihachi | 43–22 | 66.15% |
| Heefnoff vs Feng | 27–26 | 50.94% |
| Heefnoff vs Xiaoyu | 32–18 | 64.00% |
| Heefnoff vs Asuka | 37–10 | 78.72% |
| Heefnoff vs Clive | 32–15 | 68.09% |
| Heefnoff vs Nina | 29–17 | 63.04% |
| Heefnoff vs Miary Zo | 24–22 | 52.17% |
| Heefnoff vs Raven | 21–19 | 52.50% |
| Heefnoff vs Leo | 21–14 | 60.00% |
| Heefnoff vs Azucena | 21–12 | 63.64% |
| Heefnoff vs Victor | 23–10 | 69.70% |
| Heefnoff vs Alisa | 21–9 | 70.00% |
| Heefnoff vs Claudio | 14–16 | 46.67% |
| Heefnoff vs Leroy | 18–12 | 60.00% |
| Heefnoff vs Eddy | 20–10 | 66.67% |
| Heefnoff vs Fahkumram | 19–10 | 65.52% |
| Heefnoff vs Shaheen | 14–11 | 56.00% |
| Heefnoff vs Jack-8 | 12–12 | 50.00% |
| Heefnoff vs Kuma | 13–5 | 72.22% |
| Heefnoff vs Anna | 11–7 | 61.11% |
| Heefnoff vs Zafina | 8–5 | 61.54% |
| Heefnoff vs Lidia | 8–3 | 72.73% |
| Heefnoff vs Panda | 3–3 | 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.