| Mattress vs Hwoarang | 2–8 | 20.00% |
| Mattress vs Armor King | 4–2 | 66.67% |
| Mattress vs Law | 1–4 | 20.00% |
| Mattress vs King | 2–3 | 40.00% |
| Mattress vs Steve | 1–4 | 20.00% |
| Mattress vs Lars | 0–5 | 0.00% |
| Mattress vs Reina | 1–4 | 20.00% |
| Mattress vs Miary Zo | 2–3 | 40.00% |
| Mattress vs Paul | 0–4 | 0.00% |
| Mattress vs Kazuya | 2–2 | 50.00% |
| Mattress vs Lili | 2–2 | 50.00% |
| Mattress vs Dragunov | 0–4 | 0.00% |
| Mattress vs Kuma | 1–3 | 25.00% |
| Mattress vs Jin | 0–3 | 0.00% |
| Mattress vs Devil Jin | 0–3 | 0.00% |
| Mattress vs Alisa | 1–2 | 33.33% |
| Mattress vs Yoshimitsu | 0–2 | 0.00% |
| Mattress vs Asuka | 2–0 | 100.00% |
| Mattress vs Leroy | 2–0 | 100.00% |
| Mattress vs Victor | 2–0 | 100.00% |
| Mattress vs Eddy | 1–1 | 50.00% |
| Mattress vs Clive | 2–0 | 100.00% |
| Mattress vs Anna | 0–2 | 0.00% |
| Mattress vs Fahkumram | 0–2 | 0.00% |
| Mattress vs Xiaoyu | 0–1 | 0.00% |
| Mattress vs Jun | 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.