| Siamango vs Kazuya | 153–187 | 45.00% |
| Siamango vs Jin | 131–131 | 50.00% |
| Siamango vs Bryan | 124–137 | 47.51% |
| Siamango vs King | 113–114 | 49.78% |
| Siamango vs Hwoarang | 97–111 | 46.63% |
| Siamango vs Heihachi | 79–124 | 38.92% |
| Siamango vs Reina | 107–95 | 52.97% |
| Siamango vs Yoshimitsu | 79–101 | 43.89% |
| Siamango vs Steve | 85–92 | 48.02% |
| Siamango vs Dragunov | 84–84 | 50.00% |
| Siamango vs Law | 80–78 | 50.63% |
| Siamango vs Paul | 67–85 | 44.08% |
| Siamango vs Lili | 58–85 | 40.56% |
| Siamango vs Armor King | 54–68 | 44.26% |
| Siamango vs Jun | 60–60 | 50.00% |
| Siamango vs Devil Jin | 56–62 | 47.46% |
| Siamango vs Lidia | 57–47 | 54.81% |
| Siamango vs Lee | 54–47 | 53.47% |
| Siamango vs Victor | 48–49 | 49.48% |
| Siamango vs Asuka | 41–52 | 44.09% |
| Siamango vs Fahkumram | 40–51 | 43.96% |
| Siamango vs Nina | 38–51 | 42.70% |
| Siamango vs Alisa | 32–53 | 37.65% |
| Siamango vs Eddy | 38–47 | 44.71% |
| Siamango vs Azucena | 44–37 | 54.32% |
| Siamango vs Xiaoyu | 34–42 | 44.74% |
| Siamango vs Lars | 32–39 | 45.07% |
| Siamango vs Clive | 33–34 | 49.25% |
| Siamango vs Feng | 31–35 | 46.97% |
| Siamango vs Raven | 35–31 | 53.03% |
| Siamango vs Jack-8 | 36–26 | 58.06% |
| Siamango vs Leo | 30–29 | 50.85% |
| Siamango vs Claudio | 23–33 | 41.07% |
| Siamango vs Anna | 25–28 | 47.17% |
| Siamango vs Leroy | 20–26 | 43.48% |
| Siamango vs Kuma | 25–13 | 65.79% |
| Siamango vs Zafina | 10–19 | 34.48% |
| Siamango vs Shaheen | 9–7 | 56.25% |
| Siamango vs Miary Zo | 4–7 | 36.36% |
| Siamango vs Panda | 4–4 | 50.00% |
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.