Ziggs vs Yasuo

Poke with Bouncing Bomb (Q): its cooldown drops from 6 to 4 seconds, and a target slowed by Hexplosive Minefield (E) has a hard time dodging it.

Cast Satchel Charge (W) at your feet to escape or chase, even over a wall: the blast knocks you away without damaging you, and knocks back nearby enemies too.

Cast Mega Inferno Bomb (R) on a distant fight or a fleeing target: it reaches 5000 range, and the center of the blast deals more damage than the edge.

Siege towers from range, then cast Satchel Charge (W) on a tower that's almost down: below a health threshold, it's destroyed instantly.

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.