Patch 26.9 Data
Champion Matchups
Pick two champions and see who wins. Win rates, counters, and tips powered by live ranked data.
Champion 1
Kog'Maw
VS
Champion 2
Karthus
vs

45.2%
Kog'Maw win rate vs Karthus
Karthus has the edge
100
Games Analyzed
45.2%
Kog'Maw WR
54.8%
Karthus WR
-380
Avg Gold Diff @15
Kog'Maw
DamageMixed
StyleSustained
RangeRanged
Difficulty**---
StrongLate game
RunesLethal Tempo / Resolve
SummsFlash + Heal
Karthus
DamageAP
StyleSustained
RangeRanged
Difficulty**---
StrongLate game
RunesDark Harvest / Inspiration
SummsFlash + Smite
Power Spike Timeline
Kog'Maw
Level 6
Karthus
Level 6
Karthus
1 item
Kog'Maw
2 items
Kog'Maw
3 items
Karthus
3 items
How to Play This Matchup
Power Curve
Kog'Maw is strongest late game while Karthus peaks late game. Play around your power window.
Mixed Resistances
Kog'Maw deals Mixed damage while Karthus deals AP. Build resistances accordingly  don't stack the wrong type.
Mirror Playstyle
Both champions play a sustained style. The one with better execution and itemization wins. Focus on spacing and cooldown tracking.
Exploit Kog'Maw's Weakness
Kog'Maw's main weakness: No mobility, assassins, needs support peel. Play around this to maximize your advantage.
Kog'Maw Win Condition
W range + % HP shred, melt tanks, needs peel
Karthus Win Condition
R global damage, passive keeps dealing damage after death
Recommended Items
Kog'Maw

Guinsoo's Rageblade
Core
Build every game

Blade of the Ruined King
Core
Build every game
Runaan's Hurricane
Core
Build every game

Mercury's Treads
Defensive
MR + tenacity vs Karthus's AP damage and CC
Karthus

Liandry's Anguish
Core
Build every game

Shadowflame
Core
Build every game

Rabadon's
Core
Build every game
Kog'Maw's Worst Matchups
Need a fresh account to practice matchups?
Browse LoL Smurfs