The US Open is tennis's loudest, most extroverted, least well-behaved Grand Slam. The crowd gets involved, the night sessions create bizarre conditions, and the heat and humidity in early rounds eliminate more seeded players than at any other major. All of this makes the US Open prediction market the most volatile and, frankly, most fun tournament to trade on Boromarket.
What Makes the US Open Different to Price
Hard court tennis rewards power and flat ball-striking more than any other surface. Night sessions play differently from day sessions — the ball stays livelier, conditions favor bigger hitters. The crowd noise in Arthur Ashe Stadium affects match outcomes in ways that are documentable but hard to quantify. All of this creates pricing inefficiencies in the early rounds that resolve by the second week.
Key 2026 US Open Markets on Boromarket
- →Men's: Alcaraz, Sinner, or a third man — who wins?
- →Women's: Will Swiatek or Sabalenka take the title?
- →Upsets: Will a player ranked outside the top 20 reach the final?
- →Total aces in the tournament: Over/under historical average?
- →Night session results: Home crowd effect on American players?
"The US Open is the only Grand Slam where a well-timed hotdog from the crowd can change the momentum of a match. Price accordingly."
— Veteran US Open trader, Boromarket forum
When to Enter US Open Markets
US Open markets on Boromarket open six months in advance and have the highest liquidity of any tennis event. The best entry points are after Wimbledon results clarify form, and again after the Cincinnati Masters provides the last hard-court prep data. Don't trade the draw — trade the form entering the tournament.
The last hard-court results before the US Open (Cincinnati and Montreal/Toronto) are the single best predictor. Pre-position after those results before the US Open draw hype inflates prices.