Diamonds Up

What is Diamonds Up?

The pure-play prediction market-operators, Polymarket and Kalshi, emerged from Week 1 as the clear winners. On one hand, Kalshi’s market share lead narrowed over its competitors, falling to 82% for the week ended 13 September, down from 86% a week earlier.

Still, Kalshi had a nine-fold lead over Polymarket, its next closest rival. Polymarket, meanwhile, led the group with 762,000 app downloads, edging Kalshi, DraftKings and FanDuel in the category. The downloads represented a 13,509% weekly increase and 25% of total category downloads, Polymarket wrote in a statement.

Across the market, operators delivered high double-digit gains compared with Labor Day weekend, which featured a full slate of college football games but no NFL contests. Two operators, DraftKings and Underdog each saw triple-digit growth, delivering weekly increases of 125% and 119%, respectively. Three others, Polymarket, Crypto.com and Novig, saw gains of at least 30%, led by Polymarket with a weekly increase of 46%.

How to play Diamonds Up

The huge structure, measuring nearly 140 feet long and 20 feet tall, was installed Friday, September 18, as part of the second expansion of Station Casinos’ Durango property.

Suffolk Construction, the project’s general contractor, used a crane weighing roughly 650,000 pounds for the lift, with a second crane assisting with the operation.

Durango opened in December 2023 following an impressive $780 million development. The property completed its first $120 million expansion in December 2025, and work on the latest project began in January 2026.

What is Diamonds Up?

Merging Marlins and rewarding Free Spins build momentum throughout the game, creating opportunities for bigger wins.