MacroMind matchup data: real ranked games, not opinions
Jayce vs Cassiopeia
What is Jayce's win rate vs Cassiopeia?
In Mid, Jayce wins 53% against Cassiopeia across 88 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 Jayce ahead by 699 gold.
Jayce at 15:00
- Gold: +699
- CS: +2
- XP: +370
Typical gap to Cassiopeia, from 88 games that reached 15:00.
Does Jayce counter Cassiopeia?
Too close to call. Jayce sits at 53% over 88 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 Cassiopeia as Jayce
| The spot | Win rate | Games |
|---|---|---|
| Ahead in gold at 10:00 | 64% | 53 |
| First blood | 63% | 48 |
| +kills at 10:00 | 76% | 41 |
The median first death in this lane comes at 5:45; the level 6 spike lands around 5:33. Respect the all-in window until your spike is online.
What does Jayce build in Mid?
The most-finished Jayce core is Youmuu's Ghostblade, Manamune, Serylda's Grudge: 54.9% across 594 games when all three got done. All matchups, patches 26.1-26.12.
Most games start Doran's Blade + Health Potion; the first finished item is usually Youmuu's Ghostblade (2,878 games).
Skill plan: Jayce players max Q first and take Q at level 1.