Zeri vs Yasuo

Aim each Burst Fire (Q): it's your main attack, reaching 700 range and hitting the first enemy in its line.

Aim Ultrashock Laser (W) at a wall: the pulse becomes an area laser that slows and critically strikes champions.

Aim Spark Surge (E) at a wall: you vault over it, much farther than with the dash alone, and your Burst Fire pierces for a few seconds afterward.

Cast Lightning Crash (R) near a champion: hitting them gives you attack speed and move speed, and each hit on a champion extends the effect. Attack while backing off.

Hit him with a cheap attack to trigger the Way of the Wanderer (passive) shield, then start the real trade: otherwise, it absorbs your best damage.

If you have projectiles, save them for after Wind Wall (W): it blocks them all for 4 seconds, on a 25 to 17 second cooldown. Other spells go through it.

Don't stand right behind your minions: each one gives him a target for Sweeping Blade (E), and he gets closer to you with every dash.

Get out of the line of his whirlwind, the third Steel Tempest (Q): without a knock-up, he can't cast Last Breath (R).

Judge his threat by his crit items more than his level: Way of the Wanderer (passive) raises his critical strike chance, so each crit item does more for him.