loltyler1 
Master 
Clid 
Diamond IV 
Who wins Karthus vs Jax?
Karthus wins 56.2% of 130 NA and EUW ranked games against Jax in jungle, against 49.1% in that role overall. MID.GG has 2 high-elo VODs of this matchup so far, not enough games yet to call it.
Karthus vs Jax at a glance
Ranked record In line
Across 130 NA and EUW ranked games in jungle, Karthus wins 56.2% against Jax, in line with the 49.1% Karthus wins in that role overall.
VOD library Not enough games yet
In our library of 2 high-elo VODs (latest patch 26.18), Karthus won 0% against Jax and averaged 1.5/5.5/3.0. That is not enough games yet to say who the matchup favours.
Pro build
One Karthus setup into Jax takes Dark Harvest (Domination and Sorcery) and builds Malignance. It shows up in 1 of 2 games. The main alternative is Deathfire Touch (1 game).
Solo kills by level
A solo kill is a kill on the lane opponent with no assist. The bars over each champion above count them by champion level, from 130 NA and EUW ranked games in jungle; the amber marks are where that champion's kills usually fall.
Karthus's solo kills on Jax
Karthus gets 0.5 solo kills per game against Jax, in line with the 0.4 Karthus averages in jungle, and 19% of them come before level 6, about the usual 22%.
How they built Karthus into Jax
Taken from the 2 VODs on this page, patch 14.5 and 26.18.
One-off setup
Runes
Core items
One-off setup
Runes
Core items
Streamers who play Karthus
Every streamer in the library with ranked Karthus games, most games first. Each links to their VODs on MID.GG.
Common questions about Karthus vs Jax
What should Karthus build against Jax?
No rune page repeats yet in the 2 high-elo VODs on MID.GG; one game ran the Dark Harvest rune page, building Malignance first.
Latest Karthus vs Jax games
The most recent games in this matchup, newest first.
- Defeat Karhus
Challenger 
3/7/1K / D / A Patch 26.18 BotWatch in the app - Defeat Clid
Grandmaster 0/4/5K / D / A Patch 14.5 JungleWatch in the app
Related pages
