Rammus vs Briar Jungle Matchup

Rammus Jungle wins 51.9% of 2,145 Low Elo games against Briar Jungle, +0.6 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 Rammus

Wait until Briar commits to Blood Frenzy(W), then taunt her with Frenzying Taunt(E) while Defensive Ball Curl(W) is active; if she has already started Chilling Scream(E), let it end before re-engaging. (Unverified: no source confirms this note.)

Defensive Ball Curl(W) returns damage when Rammus is attacked, which punishes Briar's rapid Blood Frenzy(W) attacks; Briar's Head Rush(Q) breaks armor and can blunt Rammus's durability.

Frenzying Taunt(E) can force Briar to keep attacking Rammus, while Chilling Scream(E) lets Briar cancel her frenzy and push him away.

How to play as Briar

Don't keep auto-attacking into Defensive Ball Curl(W); use Head Rush(Q) to break armor, then Chilling Scream(E) to cancel Frenzy and push Rammus off while you switch to a softer target.

Sources

These notes come from r/BriarMains, checked against the champions' abilities.