| Diachi vs Heihachi | 40–40 | 50.00% |
| Diachi vs King | 20–28 | 41.67% |
| Diachi vs Reina | 29–19 | 60.42% |
| Diachi vs Jin | 28–18 | 60.87% |
| Diachi vs Kazuya | 19–23 | 45.24% |
| Diachi vs Law | 21–18 | 53.85% |
| Diachi vs Hwoarang | 21–17 | 55.26% |
| Diachi vs Lili | 21–14 | 60.00% |
| Diachi vs Xiaoyu | 19–15 | 55.88% |
| Diachi vs Asuka | 16–18 | 47.06% |
| Diachi vs Dragunov | 13–17 | 43.33% |
| Diachi vs Jun | 19–11 | 63.33% |
| Diachi vs Azucena | 18–10 | 64.29% |
| Diachi vs Feng | 13–14 | 48.15% |
| Diachi vs Steve | 16–10 | 61.54% |
| Diachi vs Lidia | 18–8 | 69.23% |
| Diachi vs Bryan | 6–16 | 27.27% |
| Diachi vs Victor | 15–6 | 71.43% |
| Diachi vs Armor King | 9–12 | 42.86% |
| Diachi vs Paul | 9–11 | 45.00% |
| Diachi vs Yoshimitsu | 10–9 | 52.63% |
| Diachi vs Eddy | 7–11 | 38.89% |
| Diachi vs Jack-8 | 9–8 | 52.94% |
| Diachi vs Lars | 7–9 | 43.75% |
| Diachi vs Leo | 4–11 | 26.67% |
| Diachi vs Devil Jin | 8–6 | 57.14% |
| Diachi vs Alisa | 8–6 | 57.14% |
| Diachi vs Leroy | 7–7 | 50.00% |
| Diachi vs Lee | 3–9 | 25.00% |
| Diachi vs Miary Zo | 10–1 | 90.91% |
| Diachi vs Nina | 8–2 | 80.00% |
| Diachi vs Raven | 7–1 | 87.50% |
| Diachi vs Panda | 6–1 | 85.71% |
| Diachi vs Shaheen | 5–1 | 83.33% |
| Diachi vs Kuma | 2–3 | 40.00% |
| Diachi vs Zafina | 2–2 | 50.00% |
| Diachi vs Fahkumram | 2–2 | 50.00% |
| Diachi vs Clive | 0–2 | 0.00% |
| Diachi vs Claudio | 1–0 | 100.00% |
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.