How to win lane as Yasuo against Cassiopeia · 50.14% win rate (2,517 Emerald+ games, lolalytics, sampled July 2026) · Matchup data reviewed on patch 26.15
Her W grounds your web, her E isn't wallable, and her R doesn't care about your dash — respect the miasma zones and string only outside them.
Track: Cassiopeia's W — Miasma (24–16s cooldown). Grounds you — dashes and leaps are disabled inside it.
Read from Yasuo's seat: which stage windows this plan plays for against Cassiopeia.
| Stage | Favoured | Why |
|---|---|---|
| Level 1 | Even / skill | Even L1: neither wins, Cass lacks damage and you lack a target to dash to. |
| Level 2 | Even / skill | Even L2: still a skill lane with weak Cass combo and cautious Yasuo farming. |
| Level 3 | Cassiopeia | Cass favours L3: Miasma grounds your E and Twin Fang out-sustains your trades. |
| Levels 4-5 | Cassiopeia | Cass favours L4-5: her grounding plus poke zones you off the wave repeatedly. |
| Level 6 | Cassiopeia | Cass favours L6: Petrifying Gaze stuns your dash and you cannot Wind Wall the cone. |
| First item | Cassiopeia | Cass favours 1st item: her Twin Fang healing on early AP outpaces your chip damage. |
| Two+ items | Even / skill | You favour 2+ items: your knockup-R burst finally beats her sustain and Wind Wall eats Twin Fang. |
The first two levels are a skill lane: Cass has weak base damage before her combo comes online, so you contest Q pokes and last-hits evenly. Track Miasma is 24s at rank 1, 16s at rank 5, and grounds every dash inside it — step in only while it is down. Once Cass has Twin Fang (E) spam plus Miasma (W) she grounds you: the Miasma slow field disables your E dash, so a mistimed all-in feeds her Twin Fang healing.
Pooled Emerald+ win rates from Yasuo's side, sampled July 2026.
The full Yasuo vs Cassiopeia 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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Nobody on paper — a 50.14% win rate over 2,517 games makes this a coin flip decided by play, not champion select.
Yes — Yasuo vs Cassiopeia is a genuine skill matchup: 50.14% win rate, and the favour swings window to window rather than being set at champion select.
No hard counter either way — the Yasuo vs Cassiopeia win rate is 50.14%, an even lane decided by execution.
Yasuo takes Lethal Tempo on the Precision tree with Triumph, Legend: Alacrity and Last Stand, and Resolve secondary (Bone Plating and Second Wind) vs Cassiopeia.
Start Doran's Blade + Health Potion and back for Executioner's Calling (≈800g) — cuts her sustain. Build BotRK / Immortal Shieldbow first, then Infinity Edge, with Mercury's Treads / Berserker's.
Playing the other side? Cassiopeia vs Yasuo guide →
All Yasuo mid lane matchups →
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Also played in: Top Lane