M2 · KR Master+ ranked reference

OP.GG KR / Master+ / ranked Solo/Duo filtering; individual tiers of all ten participants are not independently verified.

Patch: 26.20 / OP.GG 16.20 · Collection completed: 2026-10-14T02:47:00.937451+00:00

255 champion/role endpoints · 2,606 directional matchup records (not unique games)

These are same-role matchup game win rates and sample counts, not lane win rates, CS/gold/XP differences at 10/15 minutes or full four-champion bottom-lane relationships. This separate reference is not added to the professional model or historical evaluation.

This patch is ongoing and endpoints have different capture times. OP.GG returns a filtered set of matchups; absent pairs are unknown. Reverse directions may have different samples and must not be added as unique games. Fewer than 100 games means low support. Win rates are descriptive, not causal counter scores.