| j_oreilly4 vs Reina | 6–2 | 75.00% |
| j_oreilly4 vs King | 2–3 | 40.00% |
| j_oreilly4 vs Hwoarang | 4–1 | 80.00% |
| j_oreilly4 vs Feng | 3–1 | 75.00% |
| j_oreilly4 vs Lili | 1–3 | 25.00% |
| j_oreilly4 vs Nina | 0–4 | 0.00% |
| j_oreilly4 vs Law | 0–3 | 0.00% |
| j_oreilly4 vs Yoshimitsu | 0–3 | 0.00% |
| j_oreilly4 vs Jin | 1–2 | 33.33% |
| j_oreilly4 vs Asuka | 3–0 | 100.00% |
| j_oreilly4 vs Claudio | 1–2 | 33.33% |
| j_oreilly4 vs Devil Jin | 0–2 | 0.00% |
| j_oreilly4 vs Dragunov | 2–0 | 100.00% |
| j_oreilly4 vs Alisa | 0–2 | 0.00% |
| j_oreilly4 vs Jun | 0–2 | 0.00% |
| j_oreilly4 vs Azucena | 0–2 | 0.00% |
| j_oreilly4 vs Heihachi | 0–2 | 0.00% |
| j_oreilly4 vs Paul | 0–1 | 0.00% |
| j_oreilly4 vs Bryan | 1–0 | 100.00% |
| j_oreilly4 vs Kazuya | 1–0 | 100.00% |
| j_oreilly4 vs Steve | 0–1 | 0.00% |
| j_oreilly4 vs Shaheen | 0–1 | 0.00% |
| j_oreilly4 vs Lee | 0–1 | 0.00% |
| j_oreilly4 vs Zafina | 0–1 | 0.00% |
| j_oreilly4 vs Leroy | 1–0 | 100.00% |
| j_oreilly4 vs Lidia | 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.