| Kor_Undertaker vs Reina | 12–6 | 66.67% |
| Kor_Undertaker vs Eddy | 12–6 | 66.67% |
| Kor_Undertaker vs Jin | 12–2 | 85.71% |
| Kor_Undertaker vs Kazuya | 9–4 | 69.23% |
| Kor_Undertaker vs Steve | 3–6 | 33.33% |
| Kor_Undertaker vs Dragunov | 8–0 | 100.00% |
| Kor_Undertaker vs Jun | 6–2 | 75.00% |
| Kor_Undertaker vs Azucena | 4–4 | 50.00% |
| Kor_Undertaker vs Paul | 5–1 | 83.33% |
| Kor_Undertaker vs Xiaoyu | 4–2 | 66.67% |
| Kor_Undertaker vs Asuka | 6–0 | 100.00% |
| Kor_Undertaker vs Hwoarang | 4–1 | 80.00% |
| Kor_Undertaker vs Jack-8 | 3–2 | 60.00% |
| Kor_Undertaker vs Lili | 3–2 | 60.00% |
| Kor_Undertaker vs Law | 3–1 | 75.00% |
| Kor_Undertaker vs Devil Jin | 4–0 | 100.00% |
| Kor_Undertaker vs Alisa | 3–1 | 75.00% |
| Kor_Undertaker vs Leroy | 2–2 | 50.00% |
| Kor_Undertaker vs Victor | 3–1 | 75.00% |
| Kor_Undertaker vs Raven | 3–1 | 75.00% |
| Kor_Undertaker vs King | 3–0 | 100.00% |
| Kor_Undertaker vs Feng | 2–1 | 66.67% |
| Kor_Undertaker vs Leo | 2–1 | 66.67% |
| Kor_Undertaker vs Yoshimitsu | 2–0 | 100.00% |
| Kor_Undertaker vs Bryan | 2–0 | 100.00% |
| Kor_Undertaker vs Lee | 2–0 | 100.00% |
| Kor_Undertaker vs Shaheen | 0–1 | 0.00% |
| Kor_Undertaker vs Kuma | 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.