| UNDERTAKER vs King | 6–11 | 35.29% |
| UNDERTAKER vs Jin | 3–10 | 23.08% |
| UNDERTAKER vs Reina | 7–3 | 70.00% |
| UNDERTAKER vs Dragunov | 5–4 | 55.56% |
| UNDERTAKER vs Devil Jin | 2–5 | 28.57% |
| UNDERTAKER vs Lili | 3–4 | 42.86% |
| UNDERTAKER vs Paul | 1–4 | 20.00% |
| UNDERTAKER vs Law | 3–2 | 60.00% |
| UNDERTAKER vs Kazuya | 2–3 | 40.00% |
| UNDERTAKER vs Anna | 3–2 | 60.00% |
| UNDERTAKER vs Yoshimitsu | 4–0 | 100.00% |
| UNDERTAKER vs Xiaoyu | 4–0 | 100.00% |
| UNDERTAKER vs Steve | 1–3 | 25.00% |
| UNDERTAKER vs Jack-8 | 4–0 | 100.00% |
| UNDERTAKER vs Asuka | 0–4 | 0.00% |
| UNDERTAKER vs Shaheen | 2–2 | 50.00% |
| UNDERTAKER vs Victor | 1–3 | 25.00% |
| UNDERTAKER vs Raven | 2–2 | 50.00% |
| UNDERTAKER vs Bryan | 1–2 | 33.33% |
| UNDERTAKER vs Feng | 1–2 | 33.33% |
| UNDERTAKER vs Eddy | 0–3 | 0.00% |
| UNDERTAKER vs Clive | 0–3 | 0.00% |
| UNDERTAKER vs Leo | 2–0 | 100.00% |
| UNDERTAKER vs Lars | 0–2 | 0.00% |
| UNDERTAKER vs Kuma | 2–0 | 100.00% |
| UNDERTAKER vs Zafina | 2–0 | 100.00% |
| UNDERTAKER vs Heihachi | 0–2 | 0.00% |
| UNDERTAKER vs Hwoarang | 0–1 | 0.00% |
| UNDERTAKER vs Claudio | 0–1 | 0.00% |
| UNDERTAKER vs Jun | 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.