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Matchup

Jax
Jax
50%
50%

vs

50.0%
Jarvan IV
JarvanIV
67%
33%
Strong engageHeavy AD damageDive threatHeavy CC

Build vs Jarvan IV

Build adapted to this matchup

Starting items

Doran's Blade
Health Potion

Core build

Trinity Force
1DPS
Statikk Shiv
2DPS
Sundered Sky
3Bruiser

Standard

Boots of Swiftness
4vs Slow
Zhonya's Hourglass
5vs AD

Summoner spells

41448%
41246%

Anti AD

Plated Steelcaps
4vs AD
Zhonya's Hourglass
5vs AD
Death's Dance
vs AD
Guardian Angel
vs AD

Anti AP

Mercury's Treads
4vs CC
Wit's End
5vs AP

DPS

Dusk and Dawn
Mage tank
Hextech Gunblade
Mage
Blade of The Ruined King
DPS
Riftmaker
Mage tank

Other options

Sterak's Gage
Survival
100.0% WR1 games
PrecisionPrecision
Lethal TempoLethal Tempo
TriumphTriumph
Legend: AlacrityLegend: Alacrity
Last StandLast Stand
ResolveResolve
UnflinchingUnflinching
Bone PlatingBone Plating
Attack SpeedAdaptive ForceHealth Scaling

Power Spikes

Strength by game phase

Early (0-15)
Mid (15-30)
Late (30+)
JaxJax
JarvanIVJarvan IV
Careful
Careful
Aggressive

Jarvan IV's abilities

Passive, spells and ultimate

Martial Cadence (P)

Jarvan's first basic attack on an enemy deals bonus physical damage based on their current Health. This effect cannot occur again on the same enemy for a few seconds.

Cooldowns

Cooldowns by spell rank

LevelQWER
310s9s12s–
68s9s12s2m
96s9s12s2m
116s9s12s1m45
166s9s11s1m30
186s9s10s1m30

Playing against Jarvan IV

How to counter and exploit weaknesses

1

His EQ can be dodged by side-stepping — the hitbox isn't very wide. Move laterally.

2

J4's R can be dashed over: many champions can simply dash out (Riven, Ezreal, etc.).

3

If J4 uses his EQ offensively, he has no escape for ~12s — punish him when he's in an advanced position.

4

His R also traps his allies: J4 can cage his own team. Take advantage of the chaos if it happens.

Source: op.gg + LTL Engine · Patch 16.9.1 · May 9, 2026