Master Yi should focus on full clears and scaling toward item spikes while avoiding early river fights against Fiddlesticks's CC and ambush potential.
Prioritize farming and tempo over early invades since Fiddlesticks also scales heavily and relies on vision control and level 6 ultimates for plays.
Jungle Plan
Prioritize full clears and only contest Scuttle when nearby lanes have priority to avoid early CC and ambushes.
Use cross-map camp trades to maintain tempo and deny Fiddlesticks free farm without risking early fights.
Set up vision around dragon and Rift Herald after your first item to force Fiddlesticks into teamfights where you can clean up after CC is used.
Danger windows
Avoid isolated river fights before level 6 when Fiddlesticks can use fear (Q) and silence (E) to lock you down.
Be cautious contesting objectives early without lane priority, as Fiddlesticks's (R) ambush can turn fights instantly.
Low-health clears after forced skirmishes are risky; retreat to reset tempo rather than risking smite fights against Fiddlesticks's high objective control.
Early game
Start with a full clear to reach a safe reset timing and item progress before contesting river or objectives.
Avoid early Scuttle fights unless your lanes have priority and can support counter-ganks against Fiddlesticks's weak early dueling.
Track Fiddlesticks's pathing to avoid being caught in his level 6 fog ambushes and prepare to counter-gank with lane priority.
Power spikes
At level 6, enter fights only after Fiddlesticks commits key CC or uses (R) to maximize reset chains with (Q) and (R).
First item spike increases your sustained damage and objective control; maintain camp tempo to reach this faster than Fiddlesticks.
Respect Fiddlesticks's level 6 (R) ultimate as it enables ambushes that can punish overextensions before you have defensive options.
Win conditions
Convert superior clear speed and item spikes into uncontested objective control by forcing Fiddlesticks away with vision and lane priority.
Use (Q) and (R) resets to clean up messy skirmishes after enemy CC is committed, denying Fiddlesticks scaling.
Counter-gank effectively by tracking Fiddlesticks's pathing and entering fights post-CC to snowball lead into late-game carry damage.
Tip: For Master Yi vs Fiddlesticks, read overview, trading pattern, and danger windows first for a fast Jungle lane check.
