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

Hazard currently leads with a 55.5% win rate and 8.4% pick rate on Oasis. Mauga and Ashe round out the top 3.

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

S-tier on Oasis: Hazard, Mauga, Ashe, Kiriko.

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 Master 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 2026-09-02 to 2026-09-08 (7-day rolling window).

Overwatch Master Tier List on Oasis (7-day)

Auto-generated Overwatch tier list on Oasis for Master players, derived from a 7-day window of ranked play. Win-rate and pick-rate weighted, refreshed daily.

Last updated Tue, 08 Sep 2026 21:40:47 GMT · data window 2026-09-02 → 2026-09-08

In Master ranks competitive Overwatch on Oasis, the current top picks are Hazard, Mauga, Ashe and Kiriko. Rankings combine win rate and pick rate over a 7-day window of ranked play, refreshed daily.

Map

Hazard55.5% WR · 8.4% PR · 5.2% BR55.5% WR8.4% PR5.2% BR

Mauga54.7% WR · 7.4% PR · 52.3% BR54.7% WR7.4% PR52.3% 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 53 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 Master players?: Hazard currently leads with a 55.5% win rate and 8.4% pick rate on Oasis. Mauga and Ashe round out the top 3.
Which heroes are S-tier heroes in Overwatch in Master on Oasis?: S-tier on Oasis: Hazard, Mauga, Ashe, Kiriko.
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 Master 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 2026-09-02 to 2026-09-08 (7-day rolling window).

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