Overwatch Diamond Tier List — Oasis (7-Day)

Auto-generated Overwatch tier list on Oasis for Diamond players, built from 7 days of ranked play. Win-rate and pick-rate weighted, refreshed daily.

Last updated Sat, 24 Oct 2026 00:38:56 GMT · data window 2026-10-17 → 2026-10-23

In Diamond ranks competitive Overwatch on Oasis, the current top picks are Doctrine, Sombra, Genji and Tracer. Rankings combine win rate and pick rate over a 7-day window of ranked play, refreshed daily.

Map

Doctrine56.4% WR · 47.8% PR · 10.3% BR56.4% WR47.8% PR10.3% BR

Sombra56.0% WR · 27.7% PR · 42.5% BR56.0% WR27.7% PR42.5% BR

How tiers are computed

Pick-rate-weighted win rate and average pick rate are z-scored within this slice. Composite score = 0.7 * z(win_rate) + 0.3 * z(pick_rate). Heroes are sorted by score and bucketed by score percentile.

Pick-rate floor: heroes below 0.5% pick rate in the slice are excluded.
Score weights: 0.7 x z(win rate) + 0.3 x z(pick rate).
Tier cutoffs (by score percentile, of 54 eligible heroes): S = top 8% · A = top 17% · B = top 25% · C = top 25% · D = top 25%.

FREQUENTLY ASKED

Who is the best hero in Overwatch on Oasis for Diamond players?: Doctrine currently leads with a 56.4% win rate and 47.8% pick rate on Oasis. Sombra and Genji round out the top 3.
Which heroes are S-tier heroes in Overwatch in Diamond on Oasis?: S-tier on Oasis: Doctrine, Sombra, Genji, Tracer.
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 Diamond 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 2026-10-17 to 2026-10-23 (7-day rolling window).

RELATED TIER LISTS

By role

tank damage support

Other ranks

Bronze Silver Gold Platinum Emerald Master Grandmaster

Other maps

Rialto

Loading…

FREQUENTLY ASKED

Who is the best hero in Overwatch on Oasis for Diamond players?

Doctrine currently leads with a 56.4% win rate and 47.8% pick rate on Oasis. Sombra and Genji round out the top 3.

Which heroes are S-tier heroes in Overwatch in Diamond on Oasis?

S-tier on Oasis: Doctrine, Sombra, Genji, Tracer.

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 Diamond 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 2026-10-17 to 2026-10-23 (7-day rolling window).