MacroMind matchup data — real ranked games, not opinions
Amumu vs Jayce
How often does Amumu beat Jayce in Jungle?
Amumu into Jayce in Jungle: 45% observed win rate across 236 ranked games. Counted from real matches, and every number here shows its sample size.
By 15 minutes the median game has Amumu behind by 1,265 gold.
Does Amumu counter Jayce?
Too close for a counter call: Amumu sits at 45% over 236 games, inside the noise band. On this sample neither pick counters the other — the swing lives in the conditions below, so play the side you know better.
Beating Jayce: the Amumu game plan
A 300-gold lead at 10:00 puts Amumu at 58% across 55 games. Flip the lead and Amumu falls to 41% across 181.
| The spot | Win rate | Games |
|---|---|---|
| 300 gold up at 10:00 | 58% | 55 |
| 300 gold down at 10:00 | 41% | 181 |
| First blood | 52% | 128 |
| +kills at 10:00 | 53% | 66 |
| +CS at 10:00 | 64% | 66 |
| 0 deaths at 10:00 | 59% | 49 |
Someone usually dies here around 6:19 in the median game, and level 6 lands near 7:10. Until your spike is online, respect the all-in.
Amumu's Jungle build, with receipts
Into Jayce specifically, Amumu finishes Liandry's Torment first most often: 41.1% over 90 games of this matchup.
The most-finished Amumu core is Liandry's Torment, Sunfire Aegis, Abyssal Mask: 57.9% across 1,753 games when all three got done. All matchups, patches 16.1-16.12.
Most games start Mosstomper Seedling + Health Potion; the first finished item is usually Liandry's Torment (9,569 games).
Skill plan: Amumu players max E first and take W at level 1.