MacroMind matchup data: real ranked games, not opinions
Rammus vs Karthus
Rammus vs Karthus in Jungle: who wins more often?
Across 174 ranked games in Jungle, Rammus beats Karthus in 53% of them.
Global ranked sample: games from every region and every rank pooled together, not one server's stats. Data runs through patch 26.12; curves updated 2026-08-07.
By 15 minutes the median game has Rammus behind by 929 gold.
Rammus at 15:00
- Gold: -929
- CS: -30
- XP: -1,253
Typical gap to Karthus, from 173 games that reached 15:00.
Does Rammus counter Karthus?
Even on the count: Rammus lands at 53% over 174 games. Neither pick wins the lane alone, so take the side you play better and use the rows below to see which early spots swing this one, then play your first ten minutes around them.
Your Rammus game plan against Karthus
With a gold lead at 10:00, Rammus wins 61% of 46 games in this matchup. Behind at the same mark, the rate drops to 51% over 128.
| The spot | Win rate | Games |
|---|---|---|
| Ahead in gold at 10:00 | 61% | 46 |
| Behind in gold at 10:00 | 51% | 128 |
| First blood | 60% | 96 |
| +kills at 10:00 | 58% | 57 |
| 0 deaths at 10:00 | 62% | 61 |
In the median game here, the first death comes near 7:23 and level 6 lands around 7:31. Until your spike is online, treat the all-in window with respect.
Rammus in Jungle: the items that actually get built
Into Karthus specifically, Rammus finishes Thornmail first most often: 61.5% over 52 games of this matchup.
The most-finished Rammus core is Thornmail, Sunfire Aegis, Jak'Sho, The Protean: 59.5% across 1,169 games when all three got done. All matchups, patches 26.1-26.12.
Most games start Gustwalker Hatchling + Health Potion; the first finished item is usually Thornmail (8,447 games).
Skill plan: Rammus players max Q first and take W at level 1.