Use your tentacle zones to force Yasuo into unfavorable angles and punish his mobility reliance.
Pressure the lane actively to deny Yasuo the minion waves he needs for (E) mobility and short trades.
This is a control vs snowball matchup where you want to establish side-lane dominance and punish Yasuo's all-ins with (R).
Trading pattern
Do not chase Yasuo; let him enter your tentacle range and then land (E) to start trades.
Punish Yasuo when his (W) is down by landing (E) and committing with (W) and (R) inside your tentacle zone.
Reset your zone if tentacles are cleared and avoid trades when (E) misses or tentacles are absent.
Danger windows
Yasuo is dangerous when he has (W) up and can freely dash with (E) through minions; respect his mobility to avoid getting caught out.
Be cautious when your (R) is down, as ganks and Yasuo all-ins become safer for him.
Avoid fighting away from tentacles or after your (E) misses, as Yasuo can exploit your lack of zone control then.
Early game
Focus on setting up tentacles around the wave early to control space and threaten (E) pulls.
Avoid chasing Yasuo aggressively before level 6; instead, bait him into your tentacle zone for safer trades.
Use your medium early agency to contest Yasuo's level 2 mobility spike by denying him clean wave access.
Power spikes
At level 6, use (R) to turn Yasuo's multi-target commits into winning all-ins inside your tentacle zone.
After your first bruiser item, increase lane pressure and punish Yasuo's reduced (W) uptime and mobility reliance.
Respect Yasuo's level 2 (Q)+(E) combo and level 6 (R); avoid extended trades when these are available.
Win conditions
Control tentacle zones and force Yasuo to walk into (E) to enable strong trades and all-ins.
Use (R) to punish Yasuo's multi-target commits or ganks that enter your zone.
Deny Yasuo the minion waves he needs for (E) mobility by maintaining wave pressure and tentacle control, then splitpush to leverage your side-lane strength.
Tip: For Illaoi vs Yasuo, read overview, trading pattern, and danger windows first for a fast Top lane check.