| Jamarcus Marcus vs Jin | 24–10 | 70.59% |
| Jamarcus Marcus vs King | 15–13 | 53.57% |
| Jamarcus Marcus vs Kazuya | 11–14 | 44.00% |
| Jamarcus Marcus vs Reina | 9–15 | 37.50% |
| Jamarcus Marcus vs Steve | 15–6 | 71.43% |
| Jamarcus Marcus vs Dragunov | 8–10 | 44.44% |
| Jamarcus Marcus vs Leo | 8–8 | 50.00% |
| Jamarcus Marcus vs Lars | 8–7 | 53.33% |
| Jamarcus Marcus vs Law | 6–8 | 42.86% |
| Jamarcus Marcus vs Lee | 7–5 | 58.33% |
| Jamarcus Marcus vs Clive | 4–8 | 33.33% |
| Jamarcus Marcus vs Hwoarang | 8–3 | 72.73% |
| Jamarcus Marcus vs Azucena | 6–5 | 54.55% |
| Jamarcus Marcus vs Victor | 7–4 | 63.64% |
| Jamarcus Marcus vs Lidia | 5–6 | 45.45% |
| Jamarcus Marcus vs Jun | 3–7 | 30.00% |
| Jamarcus Marcus vs Yoshimitsu | 0–9 | 0.00% |
| Jamarcus Marcus vs Bryan | 5–4 | 55.56% |
| Jamarcus Marcus vs Paul | 2–6 | 25.00% |
| Jamarcus Marcus vs Nina | 3–5 | 37.50% |
| Jamarcus Marcus vs Raven | 6–2 | 75.00% |
| Jamarcus Marcus vs Asuka | 6–1 | 85.71% |
| Jamarcus Marcus vs Lili | 1–6 | 14.29% |
| Jamarcus Marcus vs Zafina | 1–6 | 14.29% |
| Jamarcus Marcus vs Heihachi | 1–6 | 14.29% |
| Jamarcus Marcus vs Xiaoyu | 1–4 | 20.00% |
| Jamarcus Marcus vs Alisa | 2–3 | 40.00% |
| Jamarcus Marcus vs Devil Jin | 2–1 | 66.67% |
| Jamarcus Marcus vs Claudio | 0–2 | 0.00% |
| Jamarcus Marcus vs Shaheen | 2–0 | 100.00% |
| Jamarcus Marcus vs Eddy | 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.