Cassiopeia vs Master Yi — Top Lane Matchup Guide

How to win lane as Cassiopeia against Master Yi · 43.8% win rate over 121 Emerald+ games · Updated 2026-07-27

Verdict: Closer than it looks — Cassiopeia owns 4 of the 7 game windows to Master Yi's 2, but the win rate still favours Master Yi: you have to convert those windows or the game slips away. Cassiopeia wins 43.8% of games vs Master Yi in top lane (121 Emerald+ games analysed).

Favour timeline — who owns each window

StageFavouredWhy
Level 1CassiopeiaCassiopeia owns level 1 — your Q out-pokes a melee Yi who has no way to answer at range.
Level 2CassiopeiaLevel 2 stays yours: the W slow-zone denies his engage entirely, so he can't even start the trade he wants.
Level 3CassiopeiaLevel 3 is yours — E poison-heal spam chunks him down while sustaining you through his scratch damage.
Levels 4-5Even / skillBy 4 his Wuju Style points bring the lane to even — trades are honest now, so lean on spacing, not stats.
Level 6Master YiMaster Yi takes level 6: Highlander and the Q dash dodge your damage patterns and tilt fights his way. Save Gaze for his commit, not for poke.
First itemMaster YiFirst item is his — Wuju true damage out-DPSes you the moment he sticks. Ground him, stun him, or be somewhere else.
Two+ itemsCassiopeiaLate is Cassiopeia's: R's AoE stun and your zone control lock him down before the resets start, and a locked-down Yi melts in seconds.

Early game (levels 1–5)

Bully him hard. Your Q out-pokes his melee frame at 1, the W slow-zone denies his level 2 engage outright, and from 3 the E poison-heal loop chunks him while healing back his scratch damage. Zone him off CS, stack your lead, and force him to farm under tower where your Q lands free.

Read the rest of this matchup

The full Cassiopeia vs Master Yi report continues with the mid-game plan, the late-game and teamfight plan, every power spike to play around, and the win conditions for both sides — plus cooldown tracking and the live enemy-jungle tracker inside the app.

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Playing the other side? Master Yi vs Cassiopeia guide →
All Cassiopeia top lane matchups →