MacroMind matchup data: real ranked games, not opinions
Rammus vs Master Yi
Rammus vs Master Yi in Jungle: who wins more often?
Across 2,001 ranked games in Jungle, Rammus beats Master Yi 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 647 gold.
Rammus at 15:00
- Gold: -647
- CS: -13
- XP: -485
Typical gap to Master Yi, from 1,989 games that reached 15:00.
Does Rammus counter Master Yi?
On the count, yes. Rammus takes 53% of 2,001 ranked Jungle games against Master Yi. Protect the edge: the rows below show what Rammus wins with a gold lead at 10:00, and how far it drops from behind, so trade for that lead early and do not give it back.
Your Rammus game plan against Master Yi
With a gold lead at 10:00, Rammus wins 66% of 701 games in this matchup. Behind at the same mark, the rate drops to 46% over 1,299.
| The spot | Win rate | Games |
|---|---|---|
| Ahead in gold at 10:00 | 66% | 701 |
| Behind in gold at 10:00 | 46% | 1,299 |
| First blood | 59% | 1,110 |
| +kills at 10:00 | 64% | 565 |
| +CS at 10:00 | 62% | 517 |
| 0 deaths at 10:00 | 64% | 637 |
| 0 deaths at 15:00 | 75% | 303 |
In the median game here, the first death comes near 7:02 and level 6 lands around 7:26. Until your spike is online, treat the all-in window with respect.
Rammus in Jungle: the items that actually get built
Into Master Yi specifically, Rammus finishes Thornmail first most often: 55.9% over 854 games of this matchup.
The most-finished core in this exact matchup is Thornmail, Sunfire Aegis, Jak'Sho, The Protean: 65.7% across 143 games.
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.