

Jayce vs Shaco Counter Pick
Matchup Summary
What the Data Means
The 474 games behind the 44.1 percent figure on patch 16.13.1 make this an established result rather than a fluctuation, and the cause is a defensive profile that cannot absorb a surprise. Jayce carries 590 health at level one with 22 base armor, the thinner opening statline of the two, against a champion whose entire pattern is choosing when to appear.
Deceive grants invisibility and a teleport, and the first attack out of it lands as a guaranteed critical strike, while Backstab pays extra whenever the blow arrives from behind. Two-Shiv Poison slows on hit, removing the retreat that the movement speed from Hextech Capacitor would otherwise buy. He moves at 345 against 335 and deals mixed damage, so no single defensive item answers him.
The outs available are positional rather than statistical. Thundering Blow knocks Shaco away and interrupts the follow-up, a charged Shock Blast punishes the approach when the direction is known, and Hallucinate splits attention with a clone that a charged shot is easily wasted on. Difficulty ratings of 9 against 7 mean both kits punish sloppy execution, and Jayce ends level 18 with 2,443 health against 2,313, enough to survive if the first burst is not free. Jack In The Box can also open a fight from an angle the cannon was never pointed at, which is the argument for holding a charge rather than spending it early.
FAQ
No — current data marks this as a counter matchup: Shaco has the statistical edge. Jayce wins 44.1% of the recorded games.
44.1% from Jayce's perspective, measured on patch 16.13.1.
474 ranked games at Emerald rank and above, across all regions.
The current Jayce build — items, runes and skill order from the same data set — is on the Jayce build page.