| ReyGuillen vs Jin | 53–42 | 55.79% |
| ReyGuillen vs King | 38–34 | 52.78% |
| ReyGuillen vs Kazuya | 33–33 | 50.00% |
| ReyGuillen vs Law | 35–26 | 57.38% |
| ReyGuillen vs Steve | 37–22 | 62.71% |
| ReyGuillen vs Reina | 23–32 | 41.82% |
| ReyGuillen vs Dragunov | 33–20 | 62.26% |
| ReyGuillen vs Bryan | 27–25 | 51.92% |
| ReyGuillen vs Paul | 29–22 | 56.86% |
| ReyGuillen vs Armor King | 31–19 | 62.00% |
| ReyGuillen vs Lili | 24–22 | 52.17% |
| ReyGuillen vs Jun | 30–15 | 66.67% |
| ReyGuillen vs Eddy | 23–22 | 51.11% |
| ReyGuillen vs Azucena | 25–17 | 59.52% |
| ReyGuillen vs Asuka | 25–16 | 60.98% |
| ReyGuillen vs Nina | 23–18 | 56.10% |
| ReyGuillen vs Xiaoyu | 21–16 | 56.76% |
| ReyGuillen vs Heihachi | 21–14 | 60.00% |
| ReyGuillen vs Lidia | 15–17 | 46.88% |
| ReyGuillen vs Miary Zo | 11–20 | 35.48% |
| ReyGuillen vs Yoshimitsu | 19–8 | 70.37% |
| ReyGuillen vs Hwoarang | 12–15 | 44.44% |
| ReyGuillen vs Lars | 11–13 | 45.83% |
| ReyGuillen vs Lee | 8–14 | 36.36% |
| ReyGuillen vs Victor | 9–12 | 42.86% |
| ReyGuillen vs Jack-8 | 8–11 | 42.11% |
| ReyGuillen vs Devil Jin | 9–10 | 47.37% |
| ReyGuillen vs Clive | 9–9 | 50.00% |
| ReyGuillen vs Kuma | 8–8 | 50.00% |
| ReyGuillen vs Anna | 7–8 | 46.67% |
| ReyGuillen vs Leroy | 3–9 | 25.00% |
| ReyGuillen vs Raven | 4–8 | 33.33% |
| ReyGuillen vs Fahkumram | 4–8 | 33.33% |
| ReyGuillen vs Alisa | 4–6 | 40.00% |
| ReyGuillen vs Feng | 4–5 | 44.44% |
| ReyGuillen vs Leo | 2–5 | 28.57% |
| ReyGuillen vs Claudio | 2–5 | 28.57% |
| ReyGuillen vs Zafina | 2–4 | 33.33% |
| ReyGuillen vs Shaheen | 4–1 | 80.00% |
| ReyGuillen vs Panda | 0–2 | 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.