

Kassadin vs Sylas Counter Pick
Matchup Summary
What the Data Means
Two very different profiles meet in the Mid lane: Kassadin the assassin/mage hybrid, Sylas the mage/assassin hybrid. Over 1,304 ranked games on patch 16.13.1, Kassadin closes out 46.7% of them. That is 3.3 points under even, which is why Sylas is listed among the champions Kassadin struggles into.
With both sitting in melee range (150 against 175), neither side gets a free poke pattern.
Shared damage type here — magic for Kassadin as well as Sylas. Level-one bases: Kassadin 646 HP / 21 armour / 30 MR, Sylas 600 / 29 / 32. That 8-point armour gap favours Sylas in the first all-in. Level 18 armour lands at 89 for Kassadin and 117 for Sylas. There is a movement gap too: 335 for Kassadin, 340 for Sylas.
A missed Riftwalk from Kassadin hands Sylas the window to land Kingslayer. The pressure spikes when Riftwalk and Hijack come online together.
A 8/10 difficulty rating on Kassadin, against 5/10, means the sample includes plenty of players still learning it. Treat 1,304 games as the confidence attached to 46.7%. No hand-editing here — the Kassadin figures come straight from ranked play.
FAQ
No — current data marks this as a counter matchup: Sylas has the statistical edge. Kassadin wins 46.7% of the recorded games.
46.7% from Kassadin's perspective, measured on patch 16.13.1.
1,304 ranked games at Emerald rank and above, across all regions.
The current Kassadin build — items, runes and skill order from the same data set — is on the Kassadin build page.