| Siom Prayer vs Jin | 34–67 | 33.66% |
| Siom Prayer vs Kazuya | 32–67 | 32.32% |
| Siom Prayer vs Steve | 34–51 | 40.00% |
| Siom Prayer vs Reina | 24–46 | 34.29% |
| Siom Prayer vs King | 25–40 | 38.46% |
| Siom Prayer vs Law | 19–42 | 31.15% |
| Siom Prayer vs Dragunov | 19–41 | 31.67% |
| Siom Prayer vs Hwoarang | 22–37 | 37.29% |
| Siom Prayer vs Lili | 23–31 | 42.59% |
| Siom Prayer vs Bryan | 18–34 | 34.62% |
| Siom Prayer vs Devil Jin | 17–27 | 38.64% |
| Siom Prayer vs Paul | 17–26 | 39.53% |
| Siom Prayer vs Yoshimitsu | 10–33 | 23.26% |
| Siom Prayer vs Clive | 5–37 | 11.90% |
| Siom Prayer vs Nina | 15–24 | 38.46% |
| Siom Prayer vs Heihachi | 10–29 | 25.64% |
| Siom Prayer vs Jun | 16–22 | 42.11% |
| Siom Prayer vs Lars | 9–25 | 26.47% |
| Siom Prayer vs Victor | 5–24 | 17.24% |
| Siom Prayer vs Leroy | 9–19 | 32.14% |
| Siom Prayer vs Xiaoyu | 12–14 | 46.15% |
| Siom Prayer vs Eddy | 3–22 | 12.00% |
| Siom Prayer vs Lee | 5–17 | 22.73% |
| Siom Prayer vs Azucena | 6–13 | 31.58% |
| Siom Prayer vs Asuka | 5–13 | 27.78% |
| Siom Prayer vs Claudio | 8–7 | 53.33% |
| Siom Prayer vs Lidia | 7–8 | 46.67% |
| Siom Prayer vs Alisa | 3–11 | 21.43% |
| Siom Prayer vs Jack-8 | 2–10 | 16.67% |
| Siom Prayer vs Panda | 2–10 | 16.67% |
| Siom Prayer vs Feng | 4–6 | 40.00% |
| Siom Prayer vs Raven | 3–7 | 30.00% |
| Siom Prayer vs Anna | 6–4 | 60.00% |
| Siom Prayer vs Leo | 2–7 | 22.22% |
| Siom Prayer vs Kuma | 2–6 | 25.00% |
| Siom Prayer vs Shaheen | 2–4 | 33.33% |
| Siom Prayer vs Armor King | 4–2 | 66.67% |
| Siom Prayer vs Zafina | 4–1 | 80.00% |
| Siom Prayer vs Fahkumram | 2–2 | 50.00% |
| Siom Prayer vs Miary Zo | 0–4 | 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.