Yes, SKT played Ziggs ADC in a competitive game—and they dominated with him - Dot Esports
Just a reminder when people thought nerfing Ziggs damage by 18 percent damage would kill the champion. (Tier list is based on winrate relative to how often the champion is picked) :
Ziggs Build with Highest Winrate - LoL Runes, Items, and Skill Order
Ziggs Build Guide : Ziggs: An In-Depth Nuclear Apocalypse :: League of Legends Strategy Builds
Ziggs Expert Video Guide
Ziggs, the Hexplosives Expert - League of Legends
Ziggs Build Guides :: League of Legends Strategy Builds, Runes and Items
Ziggs Pro Builds | Mythic Item Builds + Runes from Faker, Jankos, and Other Pros
Ziggs, the Hexplosives Expert - League of Legends
League of Legends S12: Ziggs ADC Build Guide - Millenium
Ziggs Build Guides :: League of Legends Strategy Builds, Runes and Items
Battle Boss Ziggs abilities in League of Legends
Ziggs Build Guides :: League of Legends Strategy Builds, Runes and Items