Master Yi vs Nasus Jungle Matchup
Master Yi Jungle wins 56.7% of 416 Low Elo games against Nasus Jungle, +0.3 points vs expected, 2-patch window 26.19-26.20.
Researched on LoL patch 26.20. Tips are written to hold at any rank; stats come from Low Elo ranked games up to patch 26.20.
How to play as Master Yi
Use Highlander (R) to ignore Wither (W) during the duel, then keep attacking while the slow immunity lasts.
Pressure Nasus's early jungle clear and contest camps when your lanes can move; Nasus jungle players recommend early camp denial and list Yi among his hardest matchups.
Highlander (R) makes Yi immune to Wither's (W) movement and attack speed slows while it is active.
How to play as Nasus
Wait for Highlander (R) to end before using Wither (W) to slow Yi; while R is active, he ignores Wither's movement and attack speed reductions.
Sources
These notes come from r/nasusmains, checked against the champions' abilities.