| Mcllroy vs Paul | 10–3 | 76.92% |
| Mcllroy vs Reina | 6–4 | 60.00% |
| Mcllroy vs King | 6–3 | 66.67% |
| Mcllroy vs Dragunov | 6–2 | 75.00% |
| Mcllroy vs Hwoarang | 4–3 | 57.14% |
| Mcllroy vs Kazuya | 6–1 | 85.71% |
| Mcllroy vs Jin | 4–2 | 66.67% |
| Mcllroy vs Steve | 5–1 | 83.33% |
| Mcllroy vs Law | 5–0 | 100.00% |
| Mcllroy vs Feng | 4–1 | 80.00% |
| Mcllroy vs Lili | 3–2 | 60.00% |
| Mcllroy vs Jun | 4–1 | 80.00% |
| Mcllroy vs Xiaoyu | 4–0 | 100.00% |
| Mcllroy vs Shaheen | 4–0 | 100.00% |
| Mcllroy vs Victor | 3–1 | 75.00% |
| Mcllroy vs Jack-8 | 2–1 | 66.67% |
| Mcllroy vs Claudio | 1–2 | 33.33% |
| Mcllroy vs Leroy | 2–1 | 66.67% |
| Mcllroy vs Azucena | 2–1 | 66.67% |
| Mcllroy vs Yoshimitsu | 0–2 | 0.00% |
| Mcllroy vs Bryan | 0–2 | 0.00% |
| Mcllroy vs Asuka | 0–2 | 0.00% |
| Mcllroy vs Devil Jin | 2–0 | 100.00% |
| Mcllroy vs Lars | 0–2 | 0.00% |
| Mcllroy vs Lee | 0–2 | 0.00% |
| Mcllroy vs Zafina | 0–2 | 0.00% |
| Mcllroy vs Lidia | 1–1 | 50.00% |
| Mcllroy vs Heihachi | 2–0 | 100.00% |
| Mcllroy vs Nina | 0–1 | 0.00% |
| Mcllroy vs Kuma | 0–1 | 0.00% |
| Mcllroy vs Raven | 0–1 | 0.00% |
| Mcllroy vs Clive | 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.