| master_chief vs Reina | 3–5 | 37.50% |
| master_chief vs Hwoarang | 1–4 | 20.00% |
| master_chief vs Law | 2–1 | 66.67% |
| master_chief vs Nina | 2–1 | 66.67% |
| master_chief vs Jun | 1–2 | 33.33% |
| master_chief vs Azucena | 0–2 | 0.00% |
| master_chief vs Victor | 0–2 | 0.00% |
| master_chief vs Paul | 0–1 | 0.00% |
| master_chief vs Yoshimitsu | 0–1 | 0.00% |
| master_chief vs Xiaoyu | 1–0 | 100.00% |
| master_chief vs Jin | 0–1 | 0.00% |
| master_chief vs Leroy | 0–1 | 0.00% |
| master_chief vs Raven | 0–1 | 0.00% |
| master_chief vs Heihachi | 1–0 | 100.00% |
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.