Cho'Gath vs Lee Sin Jungle Matchup
Cho'Gath Jungle wins 54.8% of 7,062 Low Elo games against Lee Sin Jungle, +0.0 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 Cho'Gath
Don't assume you are tanky enough to contest Lee's early invade; if you take Hail of Blades, use the fast E trade to make Lee respect your damage, then disengage before he can extend the fight.
Cho'Gath's current Hail of Blades setup can deliver a fast burst with Vorpal Spikes(E), but a recent jungle discussion notes that this build leaves him relatively fragile early; one player was surprised by Lee Sin's invade damage.
Lee Sin's Resonating Strike(Q) deals more damage to a target missing health, while Cho'Gath's Feast(R) deals true damage; both can quickly finish a low-health champion.
How to play as Lee Sin
When Cho is visible and your nearby lanes have priority, use that window to pressure his early clear; Cho jungle players report that coordinated invades become more punishing as opponents learn to exploit his early weaknesses. (Unverified: no source confirms this note.)
Sources
These notes come from r/Jungle_Mains, checked against the champions' abilities.