MacroMind matchup data — real ranked games, not opinions
Amumu vs Olaf
In Jungle, Amumu wins 46% against Olaf across 69 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 Amumu behind by 537 gold.
Does Amumu counter Olaf?
The numbers call it close: 46% for Amumu over 69 games, inside the noise band. Pick the side you play better.
How to beat Olaf as Amumu
The median first death in this lane comes at 5:37; the level 6 spike lands around 7:16. Respect the all-in window until your spike is online.