A B.League prediction market lets traders take positions on real-world B.League outcomes. Each market offers shares priced between 0¢ and 100¢, where the price represents the implied probability that the outcome occurs. You can browse all live B.League markets on this page.

There are currently 21 active B.League markets, with a combined trading volume of $10. The full list is available on this page.

The top B.League markets by volume right now are Nagasaki Velca vs. Shimane Susanoo Magic, Alvark Tokyo vs. Ryukyu Golden Kings, and Gunma Crane Thunders vs. Altiri Chiba. These are typically driven by upcoming matchups, breaking injury news, and lineup confirmations.

The next scheduled B.League event with a market on Polymarket is Alvark Tokyo vs. Ryukyu Golden Kings on September 23, 2026.

Each contract is priced between 0¢ and 100¢. A B.League team or player priced at 65¢, for example, means the market is implying a 65% probability that they win or hit the stated outcome. The other side trades at 35¢.

B.League markets typically cover individual game and match outcomes, season-long awards, championship futures, and player props where available. The exact mix depends on the B.League schedule and what traders are most active on at any given time — see the live list on this page for what's currently open.

Prices tend to move fastest on news that changes who is playing or how they'll perform — confirmed lineups, injury updates, suspensions, weather, and in-play developments. The 24–48 hours before a B.League event are typically the most active window for price movement.