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. This is an observed win rate shown with its sample size, not a prediction or a guaranteed counter.
By 15 minutes the median game has Jayce ahead by 699 gold.
Does Jayce counter Cassiopeia?
The numbers call it close: 53% for Jayce over 88 games, inside the noise band. Neither side counters the other on this sample — the lane swings on the spots below, so pick the side you play better and take the receipts with you.
How to beat Cassiopeia as Jayce
| The spot | Win rate | Games |
|---|---|---|
| 300 gold up at 10:00 | 64% | 53 |
| First blood | 62% | 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 16.1-16.12.
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.