MacroMind matchup data — real ranked games, not opinions
MasterYi vs Rammus
In Jungle, MasterYi wins 46% against Rammus across 1,339 observed ranked games. This is an observed win rate shown with its sample size, not a prediction or a guaranteed counter.
By 15 minutes the median game has MasterYi ahead by 682 gold.
Does MasterYi counter Rammus?
No. This one runs the other way: Rammus takes 54% of 1,339 ranked Jungle games, and the gap clears the noise band.
How to beat Rammus as MasterYi
Turn the early game into gold: 300 up at 10:00 runs this matchup at 53% over 866 games; 300 behind drops it to 33% over 473.
The median first death in this lane comes at 6:31; the level 6 spike lands around 7:00. Respect the all-in window until your spike is online.