1. FSV Mainz 05 vs. 1. FC Union Berlin

Platform comparison

Market context

Mainz will host Union Berlin in a Bundesliga fixture on 10 May 2026, with settlement at 17:30 UTC. The market currently prices a Union Berlin victory at 35% on Polymarket, implying roughly 65% probability for either a Mainz win or draw. Traders are exchanging conditional tokens on Polygon, denominated in USDC, with the contract resolving binary on the final whistle result.

Union Berlin have established themselves as a mid-table fixture in the Bundesliga over recent seasons, whilst Mainz typically compete in similar territory. Historical head-to-head records between these clubs show relatively balanced outcomes, with neither side demonstrating consistent dominance. The 35% implied probability for Union suggests the market views Mainz as slight favourites or expects a draw as the modal outcome. Comparable fixtures between clubs of similar standing and form usually settle around 30–40% for the away side, placing this pricing within expected ranges for a neutral-ground-equivalent matchup.

Traders should monitor squad news in the weeks preceding the fixture, particularly injury announcements to key players that could shift tactical balance. Recent Bundesliga form—particularly goal-scoring records and defensive solidity from both sides—will likely drive repricing closer to the settlement window. Fixture congestion in late April may affect squad rotation decisions. The settlement window closes precisely at the final whistle, leaving no grace period for delayed kick-offs or postponements, so traders should verify scheduling confirmations as May approaches.

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.

Resolution & payout

Resolution source: This market settles from the official publication at https://www.bundesliga.com/en/bundesliga. A proposer submits the result to the UMA Optimistic Oracle on Polygon, the two-hour challenge window opens, and the smart contract pays out in USDC.

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

FAQ

Where can I trade this market with the lowest fees?

On PolyGram, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

What does it cost to trade on PolyGram?

Zero. PolyGram routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.