Overwatch Grandmaster Tank Tier List on Rialto (7-day)

FREQUENTLY ASKED

Who is the best tank hero in Overwatch on Rialto for Grandmaster players?

Sigma currently leads with a 55.8% win rate and 13.4% pick rate on Rialto.

Which heroes are S-tier tank heroes in Overwatch in Grandmaster on Rialto?

S-tier on Rialto: Sigma.

How is this Overwatch tier list calculated?

Heroes are scored from a weighted blend of win rate (70%) and pick rate (30%) across competitive matches in Grandmaster ranks, with a minimum pick rate of 0.5% to filter out off-meta noise. S/A/B/C/D cutoffs are percentile-based across the resulting score distribution.

How often is the tier list updated?

Daily. The current snapshot covers competitive matches from 2026-04-20 to 2026-04-26 (7-day rolling window).