Patch 26.9 Data
Champion Matchups
Pick two champions and see who wins. Win rates, counters, and tips powered by live ranked data.
Champion 1
Master Yi
VS
Champion 2
Rammus
vs

46.9%
Master Yi win rate vs Rammus
Rammus has the edge
2,353
Games Analyzed
46.9%
Master Yi WR
53.1%
Rammus WR
-249
Avg Gold Diff @15
Master Yi
DamageAD
StyleSustained
RangeMelee
Difficulty**---
StrongLate game
RunesLethal Tempo / Resolve
SummsFlash + Smite
Rammus
DamageMixed
StyleAll-in
RangeMelee
Difficulty*----
StrongMid game
RunesAftershock / Inspiration
SummsFlash + Smite
Power Spike Timeline
Rammus
Level 3
Master Yi
Level 6
Rammus
Level 6
Rammus
Thornmail
Master Yi
2 items
Master Yi
3 items
How to Play This Matchup
Power Curve
Master Yi is strongest late game while Rammus peaks mid game. Play around your power window.
Mixed Resistances
Master Yi deals AD damage while Rammus deals Mixed. Build resistances accordingly  don't stack the wrong type.
Exploit Master Yi's Weakness
Master Yi's main weakness: Hard CC, burst before Q, early invades. Play around this to maximize your advantage.
Master Yi Win Condition
Scale, Q resets in teamfights, R makes untargetable
Rammus Win Condition
Q roll ganks, W reflects AD damage, R AoE slow, anti-AD
Recommended Items
Master Yi

Blade of the Ruined King
Core
Build every game

Guinsoo's Rageblade
Core
Build every game

Wit's End
Core
Build every game
Rammus

Thornmail
Core
Build every game

Dead Man's Plate
Core
Build every game

Gargoyle Stoneplate
Core
Build every game

Plated Steelcaps
Defensive
Armor boots vs Master Yi's AD damage

Bramble Vest
Counter
Grievous wounds + armor vs Master Yi's sustain/autos
Master Yi's Worst Matchups
Rammus's Worst Matchups
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