MacroMind matchup data: real ranked games, not opinions
Cassiopeia vs Jayce
What is Cassiopeia's win rate vs Jayce?
In Top, Cassiopeia wins 48% against Jayce across 202 observed ranked games.
Global ranked sample: games from every region and every rank pooled together, not one server's stats. Data runs through patch 26.12; curves updated 2026-08-07.
By 15 minutes the median game has Cassiopeia behind by 198 gold.
Cassiopeia at 15:00
- Gold: -198
- CS: +4
- XP: +30
Typical gap to Jayce, from 201 games that reached 15:00.
Does Cassiopeia counter Jayce?
Too close to call. Cassiopeia sits at 48% over 202 games, so neither pick counters the other here. The lane goes to whoever wins the spots below, like the gold lead at 10:00 or staying alive until 15:00, so play for those and let the pick argument go.
How to beat Jayce as Cassiopeia
When Cassiopeia is ahead in gold at 10:00, this matchup runs 52% over 96 games; behind, it drops to 44% over 106.
| The spot | Win rate | Games |
|---|---|---|
| Ahead in gold at 10:00 | 52% | 96 |
| Behind in gold at 10:00 | 44% | 106 |
| First blood | 53% | 85 |
| +kills at 10:00 | 57% | 84 |
| +CS at 10:00 | 47% | 110 |
The median first death in this lane comes at 4:17; the level 6 spike lands around 5:44. Respect the all-in window until your spike is online.
What does Cassiopeia build in Top?
The most-finished Cassiopeia core is Rod of Ages, Archangel's Staff, Rylai's Crystal Scepter: 57.0% across 892 games when all three got done. All matchups, patches 26.1-26.12.
Most games start Doran's Ring + Health Potion + Health Potion; the first finished item is usually Rod of Ages (1,920 games).
Skill plan: Cassiopeia players max E first and take E at level 1.