Jhin ADC vs Thresh Support Matchup

How to play as Jhin

When Thresh tosses Dark Passage (W) to bail out his low-health carry, immediately drop a ward or Captive Audience (E) trap directly on top of the lantern center to obstruct the enemy's click hitbox.

Stay outside of Thresh's 500 Flay (E) range; Thresh players look to walk up and use Flay's slow to guarantee Death Sentence (Q) rather than throwing raw hooks through minion waves.

Dark Passage (W) grants a shield and allows allies to dash directly to Thresh, facilitating an escape from follow-up burst even after taking damage from Jhin's Deadly Flourish (W).

Jhin's 550 auto-attack range outranges Thresh's 450 basic attack range, allowing Jhin to tether outside of Thresh's 500-range Flay (E) zone during lane trades.

How to play as Thresh

Wind up Death Sentence (Q) when Jhin steps up to deliver his 4th Whisper shot or commits to an auto-attack animation on a minion, exploiting his attack windup to land an easy hook.

Toss Dark Passage (W) directly toward an ally trapped inside Jhin's Curtain Call (R) firing cone to grant them a shield and pull them out of sniper range before the 4th execute bullet lands.

Both Death Sentence (Q) and Flay (E) apply hard displacement crowd control that instantly interrupts Jhin's stationary Curtain Call (R) ultimate channel.

Sources

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