Cassiopeia vs Jax Counter Pick
Matchup Summary
What the Data Means
How does Cassiopeia really do against Jax in Top? The numbers below come from live ranked matchup data. Across 169 recorded games on patch 16.13.1, Cassiopeia wins 55.0% of the time against Jax. That puts the matchup in Cassiopeia’s favor — the win rate sits above break-even, making Jax one of the targets Cassiopeia punishes most reliably.
When reading this matchup, weigh the sample size as much as the percentage — bigger samples mean the number is less likely to swing with the next patch. The stats refresh automatically every 48 hours from ranked games at Emerald and above, so this page always reflects the current meta rather than an old snapshot. For itemization and runes, open the current Cassiopeia build; both champions’ full profiles and remaining matchups are linked below.
FAQ
Yes — Cassiopeia holds the statistical advantage in this matchup. Cassiopeia wins 55.0% of the recorded games.
55.0% from Cassiopeia's perspective, measured on patch 16.13.1.
169 ranked games at Emerald rank and above, across all regions.
The current Cassiopeia build — items, runes and skill order from the same data set — is on the Cassiopeia build page.