| KoopaTroopa66 vs King | 11–8 | 57.89% |
| KoopaTroopa66 vs Hwoarang | 8–9 | 47.06% |
| KoopaTroopa66 vs Reina | 11–6 | 64.71% |
| KoopaTroopa66 vs Jin | 5–8 | 38.46% |
| KoopaTroopa66 vs Jun | 7–5 | 58.33% |
| KoopaTroopa66 vs Azucena | 5–7 | 41.67% |
| KoopaTroopa66 vs Steve | 5–5 | 50.00% |
| KoopaTroopa66 vs Lili | 8–1 | 88.89% |
| KoopaTroopa66 vs Dragunov | 1–8 | 11.11% |
| KoopaTroopa66 vs Leo | 2–6 | 25.00% |
| KoopaTroopa66 vs Lidia | 4–4 | 50.00% |
| KoopaTroopa66 vs Paul | 4–3 | 57.14% |
| KoopaTroopa66 vs Xiaoyu | 4–3 | 57.14% |
| KoopaTroopa66 vs Leroy | 3–4 | 42.86% |
| KoopaTroopa66 vs Eddy | 3–4 | 42.86% |
| KoopaTroopa66 vs Yoshimitsu | 4–2 | 66.67% |
| KoopaTroopa66 vs Kazuya | 5–1 | 83.33% |
| KoopaTroopa66 vs Kuma | 2–4 | 33.33% |
| KoopaTroopa66 vs Victor | 1–5 | 16.67% |
| KoopaTroopa66 vs Heihachi | 6–0 | 100.00% |
| KoopaTroopa66 vs Asuka | 2–3 | 40.00% |
| KoopaTroopa66 vs Devil Jin | 4–1 | 80.00% |
| KoopaTroopa66 vs Lee | 3–2 | 60.00% |
| KoopaTroopa66 vs Lars | 2–2 | 50.00% |
| KoopaTroopa66 vs Alisa | 1–2 | 33.33% |
| KoopaTroopa66 vs Zafina | 3–0 | 100.00% |
| KoopaTroopa66 vs Clive | 2–1 | 66.67% |
| KoopaTroopa66 vs Law | 0–2 | 0.00% |
| KoopaTroopa66 vs Feng | 1–1 | 50.00% |
| KoopaTroopa66 vs Bryan | 0–1 | 0.00% |
| KoopaTroopa66 vs Jack-8 | 0–1 | 0.00% |
| KoopaTroopa66 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.