- Win Rate
- 51.4%
- Pick Rate
- 1.1%
- Ban Rate
- 0.6%
Karthus Synergies & Best Teammates
- Patch
- 26.20
- Games
- 1,904
- Lane
- All Lanes
- Tier
- All Tiers
- Last Updated
- Oct 16, 2026 UTC
- Methodology
- Data Methodology
- Author
- Dakota Chinnick
Who Karthus wins with in Patch 26.20: every teammate in every role, measured against what both champions win on their own, so a strong pair is real synergy and not two strong champions.
Karthus Synergies - Patch 26.20
29 teammate pairings measuredKarthus (Jungle) wins most with Yone as mid laner (55.7%, +3.2 over expected) and Jinx as ADC (54.3%, +2.0). The weakest pairing is Jhin as ADC at 47.1%, 4.1 points below expected.
Best top laners with Karthus
Weakest pairings
Best supports for Karthus
Weakest pairings
Strongest and weakest Karthus pairings
Yone · mid laner
Jinx · ADC
Caitlyn · ADC
Yasuo · mid laner
Thresh · support
Jhin · ADC
Synergy is the win rate with that teammate minus the win rate the two champions would be expected to reach together from their own win rates in their roles (log5). Lists are ranked by the low end of each synergy's 95% range, so a small sample cannot lead a list on luck alone.
Karthus Team Synergy Checker
Pick your teammates
Pick your teammates to see how each one moves Karthus's Jungle win rate, and an estimate for the whole team.
An estimate: it adds each pairing's measured synergy on the odds scale and assumes the pairings are independent. Real teams also depend on the enemy draft and the players.
Help us maintain accuracy! If you notice incorrect stats, missing data, or any issues, your feedback directly improves the quality of our data for the entire community.
Karthus Synergies FAQ - Patch 26.20
Which champions does Karthus synergize with?
This patch, Karthus (Jungle) gets the biggest lift from Yone (mid laner, 55.7%), Jinx (ADC, 54.3%), Caitlyn (ADC, 52.0%).
Which teammates are bad with Karthus?
Karthus (Jungle) does worst next to Jhin (ADC, 47.1%), Thresh (support, 49.5%), Yasuo (mid laner, 52.4%) — each below what the two champions win on their own.
How is synergy calculated?
From ranked solo and flex games this patch: the win rate when both champions are on the same team, minus the win rate expected from each champion's own win rate in its role. A positive number means the pair wins more together than their individual strength explains. Pairings need at least 40 games to be listed.