| Waterboy vs King | 36–27 | 57.14% |
| Waterboy vs Law | 19–32 | 37.25% |
| Waterboy vs Steve | 25–22 | 53.19% |
| Waterboy vs Jin | 17–23 | 42.50% |
| Waterboy vs Hwoarang | 22–11 | 66.67% |
| Waterboy vs Paul | 10–21 | 32.26% |
| Waterboy vs Bryan | 15–16 | 48.39% |
| Waterboy vs Kazuya | 12–18 | 40.00% |
| Waterboy vs Jun | 4–24 | 14.29% |
| Waterboy vs Heihachi | 11–17 | 39.29% |
| Waterboy vs Azucena | 14–13 | 51.85% |
| Waterboy vs Reina | 15–11 | 57.69% |
| Waterboy vs Yoshimitsu | 12–11 | 52.17% |
| Waterboy vs Asuka | 9–13 | 40.91% |
| Waterboy vs Lili | 5–17 | 22.73% |
| Waterboy vs Victor | 8–14 | 36.36% |
| Waterboy vs Fahkumram | 9–12 | 42.86% |
| Waterboy vs Armor King | 9–11 | 45.00% |
| Waterboy vs Lidia | 12–6 | 66.67% |
| Waterboy vs Dragunov | 7–9 | 43.75% |
| Waterboy vs Xiaoyu | 4–11 | 26.67% |
| Waterboy vs Lee | 10–5 | 66.67% |
| Waterboy vs Raven | 8–5 | 61.54% |
| Waterboy vs Eddy | 6–7 | 46.15% |
| Waterboy vs Nina | 3–9 | 25.00% |
| Waterboy vs Feng | 3–8 | 27.27% |
| Waterboy vs Kuma | 6–4 | 60.00% |
| Waterboy vs Clive | 5–5 | 50.00% |
| Waterboy vs Jack-8 | 1–8 | 11.11% |
| Waterboy vs Devil Jin | 5–4 | 55.56% |
| Waterboy vs Lars | 5–4 | 55.56% |
| Waterboy vs Leroy | 4–5 | 44.44% |
| Waterboy vs Leo | 2–6 | 25.00% |
| Waterboy vs Alisa | 5–3 | 62.50% |
| Waterboy vs Panda | 0–6 | 0.00% |
| Waterboy vs Shaheen | 4–1 | 80.00% |
| Waterboy vs Zafina | 2–2 | 50.00% |
| Waterboy vs Claudio | 1–2 | 33.33% |
| Waterboy vs Anna | 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.