Jax dodges Fizz's autos and Rending Wave (W) on-hit with Counter Strike (E), then stuns with its second hit, and stays ahead in the duel with bruiser tank stats and Grandmaster-at-Arms (R) resistances.

Most of Master Yi's damage is auto-attacks (empowered by Wuju Style (E) and Highlander (R)), so Jax nullifies it all with Counter Strike (E), and the moment Alpha Strike (Q) ends and Yi starts auto-attacking, the second hit of Counter Strike (E) stuns and breaks his DPS cycle.

Tryndamere builds Battle Fury (P) from auto-attack crits, but Jax dodges those autos with Counter Strike (E) to deny both his fury and damage, then chains a Counter Strike (E) stun as Undying Rage (R) expires to win the extended fight.

Xin Zhao's core damage and the third-hit knockup of Three Talon Strike (Q) are all auto-attack based, so when Jax dodges with Counter Strike (E) and lands the stun, his entire combo is nullified.

Warwick's sustain comes from auto-attack lifesteal (Eternal Hunger passive), but Jax blocks those autos with Counter Strike (E) to cut off his healing, and interrupts with a Counter Strike (E) stun before Infinite Duress (R) can lock him down to take the duel.

Pantheon dominates the early melee trade before Jax scales with the point-click stun of Shield Vault (W) and the auto-attack negation of Aegis Assault (E).

Diana's damage is ability-based through Crescent Strike (Q) and Moonfall (R), so Jax's Counter Strike (E) auto-dodge barely matters, and she gap-closes with Lunar Rush (E) to preempt him with the Pale Cascade (W) shield and AoE burst.

Kha'Zix bursts down an isolated Jax with the empowered Taste Their Fear (Q) and Void Assault (R) stealth before the sustain of Counter Strike (E) can come online.

Olaf's Ragnarok (R) ignores all crowd control including Jax's Counter Strike (E) stun, and he overwhelms the extended duel with Reckless Swing (E) true damage and auto-attack lifesteal.