The Best Sigma Build for OW2 Stadium: Dominate with Accretion Power

Sigma is already a powerful tank in Overwatch 2, but in the chaotic and strategic Stadium mode, he becomes an even bigger threat—if built correctly. In this guide, we break down the best Sigma build for OW2 Stadium, round by round, focusing on one key element of his kit: Accretion.

This build is tailored to maximize Sigma’s Ability Power, reduce cooldowns, and turn his Accretion ability into a high-impact combo tool that controls the battlefiel

OW2 Stadium Sigma Build – Round-by-Round Guide

Round 1

Powers:

• Hyperloop: Direct hits with Hyperspheres reduce Accretion cooldown by 0.5s—setting up fast combos.

Items:

• Compensator: +5% weapon power
• Weapon Grease: +5% weapon speed
• First Aid Kit: +25 shields and 33% faster health regen

---

Round 2

Powers:

• None needed

Items:

Swap out Compensator and First Aid Kit, and pick up:

• Velocity Vector: +10% attack speed, +15% Hypersphere range
• Volatile Gravel: Dealing Accretion damage gives 5% Ability Power (stacks x4)

---

Round 3

Powers:

• Singularity: Accretion splash damage is boosted by 25%, and enemies are pulled toward impact.

Items:

• The Harness: +25% Ability Power and +50% Accretion explosion radius

---

Round 4

Powers:

• None needed

Items:

• Three-tap Tommygun: +10% Ability Power and Attack Speed; next 3 shots after ability deal bonus % life damage

---

Round 5

Powers:

• Mass Driver: Accretion thrown through your Barrier moves 300% faster and deals +20% damage

Items:

Choose either:

• Power Playbook: +10% weapon damage
• Velocity Vector (again): +10% attack speed and increased Hypersphere range

---

Round 6

Powers:

• None needed

Items:

Optional swap: Replace Power Playbook with

• Wrist Wraps: +5% Ability Power, +10% Attack Speed

---

Round 7

Powers:

Choose based on playstyle:

• Zero Gravity: Grants 2.5s of hovering after using any ability

                                                OR

• Maestro: Gravitic Flux costs 50% less but has 50% smaller radius

Items:

Drop Wrist Wraps, Velocity Vector, and Mass Driver, and add:

• Catalytic Crystal: +15% Ability Power, 20% more ultimate charge from ability damage
• Champion’s Kit: +35% total Ability Power

---

Why This Is the Meta Sigma Build in OW2 Stadium

This Sigma OW2 Stadium build is crafted with one clear goal: empower Accretion. With the right mix of items and powers, you can reduce cooldowns, increase blast radius, and deliver burst control and damage every few seconds. In Overwatch 2 Stadium mode, where quick decisions and optimized builds define each round, this version of Sigma gives you control and impact.

If you're looking to create a meta Sigma build in OW2 Stadium, this is the most balanced and aggressive configuration you can run.

---

Final Tips

• Use Accretion frequently to stack Volatile Gravel and earn ultimate charge fast
• Combo Hyperspheres + Accretion with Mass Driver through your Barrier for devastating bursts
• Choose Zero Gravity if mobility is key, or Maestro for frequent ultimates