MacroMind matchup data: real ranked games, not opinions
Master Yi vs Rammus
How often does Master Yi beat Rammus in Jungle?
Master Yi into Rammus in Jungle: 47% observed win rate across 2,001 ranked games.
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 Master Yi ahead by 647 gold.
Master Yi at 15:00
- Gold: +647
- CS: +13
- XP: +485
Typical gap to Rammus, from 1,989 games that reached 15:00.
Does Master Yi counter Rammus?
The count says no. Rammus holds 53% of 2,001 ranked Jungle games here. The lane is still winnable. Master Yi wins it back from the spots below, so learn which ones swing it before you lock in Master Yi against Rammus, and play for those first.
Beating Rammus: the Master Yi game plan
A gold lead at 10:00 puts Master Yi at 54% across 1,299 games. Flip the lead and Master Yi falls to 34% across 701.
| The spot | Win rate | Games |
|---|---|---|
| Ahead in gold at 10:00 | 54% | 1,299 |
| Behind in gold at 10:00 | 34% | 701 |
| First blood | 54% | 1,211 |
| +kills at 10:00 | 55% | 965 |
| +CS at 10:00 | 50% | 1,433 |
| 0 deaths at 10:00 | 58% | 527 |
| 0 deaths at 15:00 | 64% | 181 |
Someone usually dies here around 6:30 in the median game, and level 6 lands near 7:02. Until your spike is online, respect the all-in.
Master Yi's Jungle build, with receipts
Into Rammus specifically, Master Yi finishes Kraken Slayer first most often: 45.8% over 625 games of this matchup.
The most-finished core in this exact matchup is Kraken Slayer, Guinsoo's Rageblade, Experimental Hexplate: 55.8% across 138 games.
The most-finished Master Yi core is Kraken Slayer, Guinsoo's Rageblade, Experimental Hexplate: 58.5% across 8,784 games when all three got done. All matchups, patches 26.1-26.12.
Most games start Gustwalker Hatchling; the first finished item is usually Kraken Slayer (31,146 games).
Skill plan: Master Yi players max Q first and take Q at level 1.