Technical MEV Breakdown: How Arbitrage on Polymarket Becomes a Polygon Execution Game

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Most discussions about Polymarket arbitrage stop at pricing.

That is the surface layer.

The real system operates one level deeper:

MEV-driven execution competition on Polygon.

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1. System Model: What Actually Exists On-Chain

At execution time, the system reduces to three components:

• pending transactions in the mempool
• validator ordering logic
• state transition execution on Polygon L2

Arbitrage is not a trade.

It is a state change race.

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2. Where MEV Emerges

MEV (Maximal Extractable Value) appears when:

• multiple agents detect the same price inefficiency
• transactions enter shared mempool visibility
• ordering becomes economically competitive

At this point:

profit is determined before execution, not after

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3. Arbitrage as a Race Condition

A Polymarket arbitrage opportunity behaves like a race condition:

Let:

• T₁ = detection time
• T₂ = transaction submission
• T₃ = inclusion in block
• T₄ = settlement finality

Profit exists only if:

T₃ < market correction time

But in practice:

T₃ is controlled by MEV-aware actors, not traders

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4. Mempool Visibility Layer

Once a transaction enters the mempool:

• bots simulate outcomes
• profitability is recalculated instantly
• competing transactions are generated

This creates:

• transaction replacement
• gas bidding escalation
• priority ordering competition

The mempool is not passive.

It is a negotiation space.

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5. Polygon Execution Constraints

Polygon introduces specific constraints:

• block time variance impacts arbitrage windows
• gas price sensitivity affects ordering priority
• validator sequencing determines inclusion order

These variables define execution probability.

Not just cost.

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6. MEV Extraction Pipeline

A typical MEV arbitrage pipeline includes:

1. Market monitor

   • watches Polymarket price deviations

2. Signal validator

   • filters false positives

3. Simulation engine

   • runs state transition locally

4. Transaction builder

   • constructs optimized call sequence

5. Gas optimizermev-bots-kill-arbitrage-loops-explained

   • adjusts bid for inclusion priority

6. Submitter

   • pushes to mempool or private relay

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7. Priority Ordering Dynamics

Validators and builders implicitly rank transactions by:

• gas price
• expected profit impact
• bundle inclusion value

This creates a sealed competition:

highest economic signal wins blockspace

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8. Why Arbitrage Fails at Execution

Even correct signals fail due to:

• stale mempool state
• front-running by faster bots
• gas underbidding
• partial fills across pools

The failure point is not logic.

It is ordering.

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9. Private vs Public MEV Channels

Advanced systems bypass public mempool:

• private relays
• builder APIs
• direct validator relationships

This creates asymmetry:

visibility is no longer equal across participants

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10. The True Edge Definition

Edge is not:

• identifying mispricing

Edge is:

• controlling transaction inclusion probability under competitive ordering

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Final Insight

Polymarket arbitrage is not a pricing anomaly problem.

It is a MEV allocation problem on Polygon.

And MEV is decided before execution ever occurs.