Dota 2: Aurora vs OG (BO1) - BLAST Slam Group Stage

Platform comparison

Active sub-markets

Market context

Aurora and OG meet in a best-of-one group stage match at the BLAST Slam Dota 2 tournament, scheduled for 29 May at 6:20 AM ET. The crowd-implied probability sits at 100% YES, suggesting near-certainty that the match will be played and completed. This extreme confidence reflects the tournament's established infrastructure and both teams' professional standing, though such probabilities warrant scrutiny given the settlement window's seven-day cancellation clause and the inherent volatility of esports scheduling.

OG's historical dominance in Dota 2—two International titles and consistent top-tier finishes—typically anchors market expectations in their favour when facing lesser-ranked opponents. Aurora, whilst a competent squad, lacks comparable pedigree in major tournaments. However, the 100% probability assigned here concerns match completion rather than outcome prediction, which creates a distinction worth noting. Group stage matches at established tournaments like BLAST Slam rarely face cancellation absent extraordinary circumstances, and both organisations have strong incentives to field competitive rosters.

Traders should monitor BLAST's official schedule for any fixture postponements or venue changes in the days preceding 29 May, particularly given the early morning ET slot which may reflect regional broadcasting considerations. Recent esports tournaments have generally maintained their calendars despite logistical pressures, though visa complications or player illness remain latent risks. The settlement window's 7-day buffer provides meaningful protection against minor delays, but the current 100% reading leaves no room for the possibility of technical failures, forfeiture, or administrative complications that occasionally surface in online-dependent esports events.

Methodology

We track Dota 2: Aurora vs OG (BO1) - BLAST Slam Group Stage on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

Where can I trade this market with the lowest fees?

On Who Will Win, 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.

Is this market available outside the US?

Who Will Win is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

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.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Who Will Win triggers a quick verification flow that finishes in minutes.