| JaySi vs Kazuya | 48–50 | 48.98% |
| JaySi vs Jin | 45–43 | 51.14% |
| JaySi vs King | 35–41 | 46.05% |
| JaySi vs Steve | 31–41 | 43.06% |
| JaySi vs Bryan | 32–32 | 50.00% |
| JaySi vs Reina | 36–22 | 62.07% |
| JaySi vs Law | 26–30 | 46.43% |
| JaySi vs Hwoarang | 25–19 | 56.82% |
| JaySi vs Yoshimitsu | 22–17 | 56.41% |
| JaySi vs Lili | 20–18 | 52.63% |
| JaySi vs Jun | 21–15 | 58.33% |
| JaySi vs Dragunov | 15–20 | 42.86% |
| JaySi vs Paul | 10–21 | 32.26% |
| JaySi vs Nina | 19–9 | 67.86% |
| JaySi vs Devil Jin | 15–12 | 55.56% |
| JaySi vs Alisa | 14–13 | 51.85% |
| JaySi vs Heihachi | 13–12 | 52.00% |
| JaySi vs Raven | 10–12 | 45.45% |
| JaySi vs Asuka | 11–10 | 52.38% |
| JaySi vs Feng | 11–10 | 52.38% |
| JaySi vs Xiaoyu | 13–7 | 65.00% |
| JaySi vs Jack-8 | 9–9 | 50.00% |
| JaySi vs Eddy | 8–10 | 44.44% |
| JaySi vs Clive | 6–12 | 33.33% |
| JaySi vs Shaheen | 7–9 | 43.75% |
| JaySi vs Lee | 5–11 | 31.25% |
| JaySi vs Azucena | 8–7 | 53.33% |
| JaySi vs Victor | 12–3 | 80.00% |
| JaySi vs Lidia | 10–5 | 66.67% |
| JaySi vs Leo | 6–6 | 50.00% |
| JaySi vs Claudio | 4–8 | 33.33% |
| JaySi vs Kuma | 8–4 | 66.67% |
| JaySi vs Zafina | 7–5 | 58.33% |
| JaySi vs Lars | 8–3 | 72.73% |
| JaySi vs Leroy | 10–1 | 90.91% |
| JaySi vs Miary Zo | 6–2 | 75.00% |
| JaySi vs Armor King | 2–2 | 50.00% |
| JaySi vs Fahkumram | 3–0 | 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.