| John Lag vs Bryan | 60–60 | 50.00% |
| John Lag vs Steve | 54–62 | 46.55% |
| John Lag vs Jin | 54–55 | 49.54% |
| John Lag vs Kazuya | 39–62 | 38.61% |
| John Lag vs Armor King | 43–54 | 44.33% |
| John Lag vs Law | 40–39 | 50.63% |
| John Lag vs Reina | 31–40 | 43.66% |
| John Lag vs Dragunov | 32–38 | 45.71% |
| John Lag vs Lili | 28–34 | 45.16% |
| John Lag vs Devil Jin | 27–34 | 44.26% |
| John Lag vs Asuka | 23–29 | 44.23% |
| John Lag vs King | 22–23 | 48.89% |
| John Lag vs Hwoarang | 20–21 | 48.78% |
| John Lag vs Yoshimitsu | 24–14 | 63.16% |
| John Lag vs Heihachi | 21–16 | 56.76% |
| John Lag vs Eddy | 16–17 | 48.48% |
| John Lag vs Jun | 16–14 | 53.33% |
| John Lag vs Leroy | 10–18 | 35.71% |
| John Lag vs Fahkumram | 4–24 | 14.29% |
| John Lag vs Xiaoyu | 14–13 | 51.85% |
| John Lag vs Lidia | 10–17 | 37.04% |
| John Lag vs Lars | 15–11 | 57.69% |
| John Lag vs Lee | 14–12 | 53.85% |
| John Lag vs Paul | 9–15 | 37.50% |
| John Lag vs Leo | 13–11 | 54.17% |
| John Lag vs Feng | 11–12 | 47.83% |
| John Lag vs Victor | 13–9 | 59.09% |
| John Lag vs Nina | 4–17 | 19.05% |
| John Lag vs Alisa | 8–12 | 40.00% |
| John Lag vs Shaheen | 9–10 | 47.37% |
| John Lag vs Raven | 8–8 | 50.00% |
| John Lag vs Claudio | 1–14 | 6.67% |
| John Lag vs Clive | 9–6 | 60.00% |
| John Lag vs Azucena | 3–10 | 23.08% |
| John Lag vs Jack-8 | 7–4 | 63.64% |
| John Lag vs Miary Zo | 4–5 | 44.44% |
| John Lag vs Kuma | 1–6 | 14.29% |
| John Lag vs Anna | 1–4 | 20.00% |
| John Lag vs Panda | 2–1 | 66.67% |
| John Lag vs Zafina | 2–0 | 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.