| UNDERTAKER vs Bryan | 257–208 | 55.27% |
| UNDERTAKER vs Dragunov | 209–190 | 52.38% |
| UNDERTAKER vs Lili | 175–155 | 53.03% |
| UNDERTAKER vs Jin | 179–131 | 57.74% |
| UNDERTAKER vs King | 177–122 | 59.20% |
| UNDERTAKER vs Lars | 164–135 | 54.85% |
| UNDERTAKER vs Alisa | 157–133 | 54.14% |
| UNDERTAKER vs Lee | 153–136 | 52.94% |
| UNDERTAKER vs Asuka | 140–147 | 48.78% |
| UNDERTAKER vs Yoshimitsu | 147–137–1 | 51.76% |
| UNDERTAKER vs Nina | 152–124 | 55.07% |
| UNDERTAKER vs Hwoarang | 171–99 | 63.33% |
| UNDERTAKER vs Steve | 119–141 | 45.77% |
| UNDERTAKER vs Victor | 152–106 | 58.91% |
| UNDERTAKER vs Reina | 155–98 | 61.26% |
| UNDERTAKER vs Kazuya | 145–105 | 58.00% |
| UNDERTAKER vs Lidia | 151–96 | 61.13% |
| UNDERTAKER vs Paul | 145–101 | 58.94% |
| UNDERTAKER vs Heihachi | 133–109 | 54.96% |
| UNDERTAKER vs Law | 144–96 | 60.00% |
| UNDERTAKER vs Jun | 145–92 | 61.18% |
| UNDERTAKER vs Jack-8 | 113–114 | 49.78% |
| UNDERTAKER vs Leo | 113–112 | 50.22% |
| UNDERTAKER vs Feng | 124–95 | 56.62% |
| UNDERTAKER vs Eddy | 116–98 | 54.21% |
| UNDERTAKER vs Claudio | 94–92 | 50.54% |
| UNDERTAKER vs Azucena | 92–94 | 49.46% |
| UNDERTAKER vs Devil Jin | 107–73 | 59.44% |
| UNDERTAKER vs Xiaoyu | 93–85 | 52.25% |
| UNDERTAKER vs Shaheen | 75–94 | 44.38% |
| UNDERTAKER vs Leroy | 96–60 | 61.54% |
| UNDERTAKER vs Zafina | 64–85 | 42.95% |
| UNDERTAKER vs Raven | 75–68 | 52.45% |
| UNDERTAKER vs Clive | 85–48 | 63.91% |
| UNDERTAKER vs Kuma | 57–57 | 50.00% |
| UNDERTAKER vs Miary Zo | 50–38 | 56.82% |
| UNDERTAKER vs Panda | 39–30 | 56.52% |
| UNDERTAKER vs Anna | 30–31 | 49.18% |
| UNDERTAKER vs Armor King | 28–30 | 48.28% |
| UNDERTAKER vs Fahkumram | 29–28 | 50.88% |
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.