Sett & Caitlyn Synergy
Sett Top and Caitlyn ADC win 51.0% of 14,119 Low Elo games together, +0.1 points vs expected, 2-patch window 26.19-26.20.
Researched on LoL patch 26.20. Tips are written to hold at any rank; stats come from Low Elo ranked games up to patch 26.20.
Playing the duo
Facebreaker(E) stuns only when Sett catches enemies from both sides; catching them from one side slows them. The Show Stopper(R) slows enemies near its landing area but does not hold them still, so Caitlyn's trap needs to arm and trigger before it grants Headshot(P).
How to play as Sett
Follow Caitlyn's trap root with Facebreaker, ideally catching the trapped enemy and a second champion on opposite sides, to extend the chain of crowd control while she lands her empowered shots.
How to play as Caitlyn
When Sett's Facebreaker(E) stuns a target with enemies on both sides, place a trap under it while it is held. For The Show Stopper(R), predict the landing or escape path: its slow alone does not guarantee a chained trap root.
Play fights front-to-back: let Sett walk in first and draw attention, then attack from your 650 range behind him and keep one trap in reserve to answer divers rather than throwing all of them forward. (Unverified: no source confirms this note.)
Sources
These notes come from LoL Wiki, r/summonerschool, and r/settmains, checked against the champions' abilities.