| Rex21 vs Hwoarang | 92–89 | 50.83% |
| Rex21 vs King | 87–84–1 | 50.88% |
| Rex21 vs Law | 64–54 | 54.24% |
| Rex21 vs Jin | 56–54 | 50.91% |
| Rex21 vs Kazuya | 39–64 | 37.86% |
| Rex21 vs Eddy | 59–44 | 57.28% |
| Rex21 vs Bryan | 49–52 | 48.51% |
| Rex21 vs Lee | 56–36 | 60.87% |
| Rex21 vs Dragunov | 43–42 | 50.59% |
| Rex21 vs Lars | 45–35 | 56.25% |
| Rex21 vs Steve | 49–28 | 63.64% |
| Rex21 vs Nina | 37–38 | 49.33% |
| Rex21 vs Paul | 28–44 | 38.89% |
| Rex21 vs Xiaoyu | 26–43 | 37.68% |
| Rex21 vs Yoshimitsu | 27–37 | 42.19% |
| Rex21 vs Lili | 34–30 | 53.12% |
| Rex21 vs Azucena | 36–23 | 61.02% |
| Rex21 vs Victor | 30–29 | 50.85% |
| Rex21 vs Reina | 29–25 | 53.70% |
| Rex21 vs Jun | 29–23 | 55.77% |
| Rex21 vs Raven | 27–24 | 52.94% |
| Rex21 vs Feng | 27–18 | 60.00% |
| Rex21 vs Devil Jin | 19–23 | 45.24% |
| Rex21 vs Claudio | 18–22 | 45.00% |
| Rex21 vs Anna | 21–19 | 52.50% |
| Rex21 vs Jack-8 | 16–20 | 44.44% |
| Rex21 vs Heihachi | 12–23 | 34.29% |
| Rex21 vs Alisa | 15–19 | 44.12% |
| Rex21 vs Asuka | 18–14 | 56.25% |
| Rex21 vs Lidia | 16–15 | 51.61% |
| Rex21 vs Leroy | 17–13 | 56.67% |
| Rex21 vs Kuma | 13–13 | 50.00% |
| Rex21 vs Leo | 15–10 | 60.00% |
| Rex21 vs Zafina | 12–12 | 50.00% |
| Rex21 vs Clive | 10–7 | 58.82% |
| Rex21 vs Fahkumram | 11–6 | 64.71% |
| Rex21 vs Shaheen | 5–7 | 41.67% |
| Rex21 vs Panda | 3–4 | 42.86% |
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.