| iRock vs Kazuya | 91–99 | 47.89% |
| iRock vs King | 76–98 | 43.68% |
| iRock vs Bryan | 66–72 | 47.83% |
| iRock vs Jin | 63–67 | 48.46% |
| iRock vs Dragunov | 48–49 | 49.48% |
| iRock vs Steve | 40–46 | 46.51% |
| iRock vs Heihachi | 39–45 | 46.43% |
| iRock vs Armor King | 36–34 | 51.43% |
| iRock vs Fahkumram | 26–42 | 38.24% |
| iRock vs Yoshimitsu | 35–31 | 53.03% |
| iRock vs Hwoarang | 30–35 | 46.15% |
| iRock vs Devil Jin | 21–41 | 33.87% |
| iRock vs Lili | 23–36 | 38.98% |
| iRock vs Law | 28–27 | 50.91% |
| iRock vs Lars | 17–38 | 30.91% |
| iRock vs Reina | 20–33 | 37.74% |
| iRock vs Eddy | 20–29 | 40.82% |
| iRock vs Azucena | 24–24 | 50.00% |
| iRock vs Lee | 20–27 | 42.55% |
| iRock vs Paul | 20–26 | 43.48% |
| iRock vs Nina | 25–17 | 59.52% |
| iRock vs Asuka | 19–17 | 52.78% |
| iRock vs Jun | 10–26 | 27.78% |
| iRock vs Feng | 11–21 | 34.38% |
| iRock vs Victor | 18–12 | 60.00% |
| iRock vs Xiaoyu | 10–19 | 34.48% |
| iRock vs Alisa | 13–14 | 48.15% |
| iRock vs Clive | 10–14 | 41.67% |
| iRock vs Anna | 13–11 | 54.17% |
| iRock vs Leo | 6–11 | 35.29% |
| iRock vs Claudio | 8–8 | 50.00% |
| iRock vs Raven | 10–6 | 62.50% |
| iRock vs Jack-8 | 4–11 | 26.67% |
| iRock vs Shaheen | 4–10 | 28.57% |
| iRock vs Miary Zo | 5–8 | 38.46% |
| iRock vs Kuma | 2–7 | 22.22% |
| iRock vs Lidia | 7–1 | 87.50% |
| iRock vs Leroy | 3–3 | 50.00% |
| iRock vs Panda | 3–1 | 75.00% |
| iRock vs Zafina | 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.