| Iafon vs King | 49–63 | 43.75% |
| Iafon vs Jin | 45–46 | 49.45% |
| Iafon vs Reina | 50–41 | 54.95% |
| Iafon vs Steve | 44–43 | 50.57% |
| Iafon vs Kazuya | 27–45 | 37.50% |
| Iafon vs Bryan | 22–34 | 39.29% |
| Iafon vs Asuka | 28–23 | 54.90% |
| Iafon vs Eddy | 24–27 | 47.06% |
| Iafon vs Hwoarang | 18–32 | 36.00% |
| Iafon vs Clive | 25–24 | 51.02% |
| Iafon vs Law | 17–31 | 35.42% |
| Iafon vs Victor | 36–10 | 78.26% |
| Iafon vs Jun | 25–18 | 58.14% |
| Iafon vs Heihachi | 26–16 | 61.90% |
| Iafon vs Dragunov | 17–24 | 41.46% |
| Iafon vs Azucena | 15–24 | 38.46% |
| Iafon vs Lidia | 15–24 | 38.46% |
| Iafon vs Lili | 19–19 | 50.00% |
| Iafon vs Paul | 8–23 | 25.81% |
| Iafon vs Armor King | 11–18 | 37.93% |
| Iafon vs Lars | 15–13 | 53.57% |
| Iafon vs Lee | 17–10 | 62.96% |
| Iafon vs Yoshimitsu | 11–14 | 44.00% |
| Iafon vs Leo | 8–17 | 32.00% |
| Iafon vs Leroy | 9–16 | 36.00% |
| Iafon vs Nina | 10–14 | 41.67% |
| Iafon vs Miary Zo | 12–11 | 52.17% |
| Iafon vs Alisa | 10–11 | 47.62% |
| Iafon vs Shaheen | 13–7 | 65.00% |
| Iafon vs Devil Jin | 8–10 | 44.44% |
| Iafon vs Feng | 7–10 | 41.18% |
| Iafon vs Fahkumram | 7–8 | 46.67% |
| Iafon vs Xiaoyu | 5–9 | 35.71% |
| Iafon vs Claudio | 5–9 | 35.71% |
| Iafon vs Jack-8 | 2–10 | 16.67% |
| Iafon vs Zafina | 5–7 | 41.67% |
| Iafon vs Raven | 5–6 | 45.45% |
| Iafon vs Kuma | 3–6 | 33.33% |
| Iafon vs Anna | 1–5 | 16.67% |
| Iafon vs Panda | 1–2 | 33.33% |
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.