| Ja_ummm vs King | 22–32 | 40.74% |
| Ja_ummm vs Steve | 32–18 | 64.00% |
| Ja_ummm vs Jin | 14–26 | 35.00% |
| Ja_ummm vs Armor King | 16–16 | 50.00% |
| Ja_ummm vs Bryan | 15–14 | 51.72% |
| Ja_ummm vs Dragunov | 13–15 | 46.43% |
| Ja_ummm vs Reina | 14–14 | 50.00% |
| Ja_ummm vs Leo | 11–16 | 40.74% |
| Ja_ummm vs Law | 12–12 | 50.00% |
| Ja_ummm vs Hwoarang | 10–14 | 41.67% |
| Ja_ummm vs Kazuya | 12–11 | 52.17% |
| Ja_ummm vs Asuka | 11–11 | 50.00% |
| Ja_ummm vs Lars | 5–17 | 22.73% |
| Ja_ummm vs Heihachi | 7–14 | 33.33% |
| Ja_ummm vs Lili | 9–11 | 45.00% |
| Ja_ummm vs Jun | 12–8 | 60.00% |
| Ja_ummm vs Alisa | 11–6 | 64.71% |
| Ja_ummm vs Yoshimitsu | 8–7 | 53.33% |
| Ja_ummm vs Victor | 12–3 | 80.00% |
| Ja_ummm vs Xiaoyu | 6–8 | 42.86% |
| Ja_ummm vs Claudio | 8–6 | 57.14% |
| Ja_ummm vs Azucena | 5–8 | 38.46% |
| Ja_ummm vs Anna | 4–9 | 30.77% |
| Ja_ummm vs Miary Zo | 8–5 | 61.54% |
| Ja_ummm vs Leroy | 4–7 | 36.36% |
| Ja_ummm vs Eddy | 5–6 | 45.45% |
| Ja_ummm vs Clive | 5–6 | 45.45% |
| Ja_ummm vs Feng | 4–5 | 44.44% |
| Ja_ummm vs Fahkumram | 6–3 | 66.67% |
| Ja_ummm vs Devil Jin | 6–2 | 75.00% |
| Ja_ummm vs Lee | 1–7 | 12.50% |
| Ja_ummm vs Raven | 4–3 | 57.14% |
| Ja_ummm vs Shaheen | 3–2 | 60.00% |
| Ja_ummm vs Nina | 1–4 | 20.00% |
| Ja_ummm vs Lidia | 2–2 | 50.00% |
| Ja_ummm vs Paul | 0–3 | 0.00% |
| Ja_ummm vs Jack-8 | 0–1 | 0.00% |
| Ja_ummm vs Kuma | 0–1 | 0.00% |
| Ja_ummm vs Panda | 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.