| BillyCostigan vs Hwoarang | 14–4 | 77.78% |
| BillyCostigan vs King | 6–9 | 40.00% |
| BillyCostigan vs Jin | 11–1 | 91.67% |
| BillyCostigan vs Steve | 3–8 | 27.27% |
| BillyCostigan vs Anna | 8–3 | 72.73% |
| BillyCostigan vs Fahkumram | 5–5 | 50.00% |
| BillyCostigan vs Law | 5–4 | 55.56% |
| BillyCostigan vs Kazuya | 5–3 | 62.50% |
| BillyCostigan vs Alisa | 6–2 | 75.00% |
| BillyCostigan vs Leroy | 5–3 | 62.50% |
| BillyCostigan vs Paul | 3–4 | 42.86% |
| BillyCostigan vs Bryan | 5–1 | 83.33% |
| BillyCostigan vs Nina | 6–0 | 100.00% |
| BillyCostigan vs Lee | 5–1 | 83.33% |
| BillyCostigan vs Azucena | 5–1 | 83.33% |
| BillyCostigan vs Heihachi | 3–3 | 50.00% |
| BillyCostigan vs Lili | 4–1 | 80.00% |
| BillyCostigan vs Dragunov | 2–3 | 40.00% |
| BillyCostigan vs Devil Jin | 3–1 | 75.00% |
| BillyCostigan vs Shaheen | 2–2 | 50.00% |
| BillyCostigan vs Victor | 4–0 | 100.00% |
| BillyCostigan vs Eddy | 1–3 | 25.00% |
| BillyCostigan vs Xiaoyu | 3–0 | 100.00% |
| BillyCostigan vs Lars | 1–2 | 33.33% |
| BillyCostigan vs Jun | 2–1 | 66.67% |
| BillyCostigan vs Reina | 2–1 | 66.67% |
| BillyCostigan vs Raven | 1–2 | 33.33% |
| BillyCostigan vs Kuma | 1–1 | 50.00% |
| BillyCostigan vs Clive | 1–1 | 50.00% |
| BillyCostigan vs Yoshimitsu | 1–0 | 100.00% |
| BillyCostigan vs Jack-8 | 1–0 | 100.00% |
| BillyCostigan vs Asuka | 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.