SS Lazio vs. FC Internazionale Milano

Platform comparison

Market context

The Coppa Italia semi-final or final fixture between Lazio and Inter Milan is scheduled for Wednesday, 13 May 2026. The 0% implied probability reflects the market's current inability to assess either side's likelihood of victory, potentially owing to the event's distance from present conditions or insufficient liquidity in early trading. Coppa Italia knockout matches between Serie A sides typically draw substantial betting interest closer to fixture dates, when team form, injury lists and tactical preparation become concrete rather than speculative.

Historical precedent suggests Coppa Italia knockout probabilities stabilise significantly in the fortnight before matches, as squad news and pre-match declarations clarify. Inter Milan and Lazio have contested multiple knockout encounters in recent seasons, with outcomes heavily dependent on fixture congestion, European competition schedules and managerial continuity. The 2026 calendar will determine whether either club faces fixture pile-up or European commitments that affect squad rotation and player availability.

Traders should monitor official Coppa Italia fixture confirmations, team injury bulletins and any managerial changes at either club through spring 2026. Serie A standings and European competition progression will shape both sides' priorities and squad freshness heading into May. Recent Coppa Italia draws and semi-final structures—published by the Italian Football Federation—will clarify whether this is a single-leg or two-leg tie, a distinction that materially affects match dynamics and probability assessment.

Methodology

Political prediction markets differ structurally from sports betting: thinner liquidity, longer settlement windows, higher sensitivity to single news events. This page shows the live Polymarket quote for SS Lazio vs. FC Internazionale Milano plus platform attributes for the three reference venues, so you can see at a glance where the deepest market for this question sits.

Resolution & payout

Resolution source: This market settles from the official publication at https://www.legaseriea.it/en/coppa-italia. 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.

For political markets the resolution source is decisive. Polymarket defines a concrete source per contract (e.g. AP, Reuters, official electoral commission) and uses the UMA Optimistic Oracle as the on-chain dispute mechanism. With a clearly defined outcome the USDC payout lands within minutes of the final confirmation.

FAQ

How accurate are political prediction markets?

Historically more accurate than polls. Polymarket's Brier score on US 2024 elections was ~0.11 — better than 538 (~0.14) and every mainstream poll. Markets aggregate information with real skin in the game.

What resolution source is used for elections?

Polymarket defines the source per contract — usually Associated Press (AP Race Call), Reuters or the official electoral commission. The source is stated in contract details before the market opens.

Which platform has the deepest political liquidity?

Polymarket — by far. US 2024 presidential volume was ~$3.5B vs Kalshi (~$200M) and Betfair (~$120M). Where Polymarket is geo-blocked, brokers like PolyGram route into the same order book at 0% fees.

Why do Polymarket and Kalshi differ on elections?

Kalshi must follow CFTC compliance — strict definitions, clear resolution sources, US citizens only with KYC. Polymarket operates globally without CFTC oversight — deeper liquidity, but also higher regulatory risk.

Which political events have the biggest volume?

US Presidential election, party nominations (DNC/RNC), Senate majorities, individual state outcomes (Pennsylvania, Michigan, Wisconsin), and major European elections. Peak markets reach $50-500M per event.