| Santo vs King | 63–58 | 52.07% |
| Santo vs Kazuya | 48–42 | 53.33% |
| Santo vs Hwoarang | 40–41 | 49.38% |
| Santo vs Jin | 39–37 | 51.32% |
| Santo vs Law | 28–35 | 44.44% |
| Santo vs Dragunov | 29–33 | 46.77% |
| Santo vs Jun | 41–21 | 66.13% |
| Santo vs Steve | 34–26 | 56.67% |
| Santo vs Reina | 26–32 | 44.83% |
| Santo vs Eddy | 24–33 | 42.11% |
| Santo vs Yoshimitsu | 26–30 | 46.43% |
| Santo vs Lili | 27–28 | 49.09% |
| Santo vs Bryan | 18–33 | 35.29% |
| Santo vs Lars | 26–22 | 54.17% |
| Santo vs Raven | 17–26 | 39.53% |
| Santo vs Victor | 23–19 | 54.76% |
| Santo vs Azucena | 18–23 | 43.90% |
| Santo vs Asuka | 20–20 | 50.00% |
| Santo vs Xiaoyu | 14–23 | 37.84% |
| Santo vs Leo | 17–18 | 48.57% |
| Santo vs Nina | 16–19 | 45.71% |
| Santo vs Leroy | 16–19 | 45.71% |
| Santo vs Paul | 16–18 | 47.06% |
| Santo vs Alisa | 11–20 | 35.48% |
| Santo vs Devil Jin | 13–15 | 46.43% |
| Santo vs Feng | 15–10 | 60.00% |
| Santo vs Lee | 14–10 | 58.33% |
| Santo vs Jack-8 | 10–13 | 43.48% |
| Santo vs Shaheen | 7–14 | 33.33% |
| Santo vs Heihachi | 8–11 | 42.11% |
| Santo vs Fahkumram | 6–13 | 31.58% |
| Santo vs Claudio | 5–9 | 35.71% |
| Santo vs Panda | 7–5 | 58.33% |
| Santo vs Zafina | 5–5 | 50.00% |
| Santo vs Lidia | 6–4 | 60.00% |
| Santo vs Anna | 3–4 | 42.86% |
| Santo vs Kuma | 1–5 | 16.67% |
| Santo vs Clive | 0–1 | 0.00% |
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.