Jhin vs Caitlyn ADC Matchup

How to play as Jhin

Match Caitlyn's wave clear using Dancing Grenade (Q) to avoid getting trapped under your own turret, where her traps and long-range poke are most oppressive.

Hold Deadly Flourish (W) until Caitlyn uses 90 Caliber Net (E) to escape: timing your root at the end of her recoil dash leaves her immobilized without further disengage.

Use the burst of movement speed granted by your 4th shot critical strike to tag Caitlyn and immediately disengage out of range before she can retaliate with continuous basic attacks.

Deadly Flourish (W) pierces through minions and stops on the first champion hit, rooting targets that have been damaged by Jhin or his allies within the last 4 seconds.

How to play as Caitlyn

Harass Jhin with your 100 range advantage while he is on bullets 1 through 3 or during his reload animation, but back off immediately when he holds his empowered 4th shot.

Slow-push waves and trap Jhin under his turret: place Yordle Snap Traps along blind spots behind the tower and choke points to restrict his pathing and force him to lose farm.

Caitlyn's 650 basic attack range outranges Jhin's 550 range by 100 units, allowing her to land free attacks whenever Jhin steps up to last hit without abilities.

Yordle Snap Trap (W) immobilizes targets for 1.5 seconds and grants an empowered Headshot with doubled attack range against the trapped enemy.

Sources

These notes come from r/Caitlynmains and r/JhinMains, checked against the champions' abilities.