Steam
A sudden, significant line move across the betting market, often caused by a flurry of bets in a short time. “Steam” moves can result from betting syndicates or many bettors reacting simultaneously to news or a tip. Sportsbooks will adjust odds rapidly when they detect steam.
Crawford’s odds drop from +150 to +120 at many books within 10 minutes – a **steam** move likely triggered by a wave of sharp money. Bettors refer to “chasing steam” as jumping on a pick as the line is moving, hoping to still get value before it settles.