| KT121 vs Hwoarang | 31–43 | 41.89% |
| KT121 vs King | 43–22 | 66.15% |
| KT121 vs Kazuya | 26–29 | 47.27% |
| KT121 vs Bryan | 26–27 | 49.06% |
| KT121 vs Law | 30–22 | 57.69% |
| KT121 vs Steve | 26–23 | 53.06% |
| KT121 vs Yoshimitsu | 28–19 | 59.57% |
| KT121 vs Jin | 20–23 | 46.51% |
| KT121 vs Lee | 17–26 | 39.53% |
| KT121 vs Lili | 28–14 | 66.67% |
| KT121 vs Dragunov | 19–22 | 46.34% |
| KT121 vs Jun | 22–16 | 57.89% |
| KT121 vs Alisa | 21–16 | 56.76% |
| KT121 vs Heihachi | 15–22 | 40.54% |
| KT121 vs Devil Jin | 19–16 | 54.29% |
| KT121 vs Asuka | 26–8 | 76.47% |
| KT121 vs Paul | 18–15 | 54.55% |
| KT121 vs Reina | 17–14 | 54.84% |
| KT121 vs Lars | 11–19 | 36.67% |
| KT121 vs Eddy | 21–9 | 70.00% |
| KT121 vs Raven | 16–13 | 55.17% |
| KT121 vs Victor | 14–13 | 51.85% |
| KT121 vs Xiaoyu | 15–11 | 57.69% |
| KT121 vs Nina | 15–11 | 57.69% |
| KT121 vs Azucena | 17–7 | 70.83% |
| KT121 vs Feng | 8–13 | 38.10% |
| KT121 vs Leroy | 12–9 | 57.14% |
| KT121 vs Lidia | 6–11 | 35.29% |
| KT121 vs Jack-8 | 12–4 | 75.00% |
| KT121 vs Leo | 7–6 | 53.85% |
| KT121 vs Clive | 5–3 | 62.50% |
| KT121 vs Claudio | 4–2 | 66.67% |
| KT121 vs Shaheen | 2–3 | 40.00% |
| KT121 vs Kuma | 3–1 | 75.00% |
| KT121 vs Panda | 3–1 | 75.00% |
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.