According to data from Kalshi, the sole platform tracking this market, forecasters unanimously expect that no golfer will shoot a round of 58 or lower during the 2026 PGA Championship. The market, which has attracted $39,000 in trading volume, shows a 0% chance of a score below 58, effectively pricing in a floor of 59 or higher for the tournament's lowest round. This consensus reflects the extreme rarity of sub-58 rounds in major championship history—only a handful of players have ever broken 60 on the PGA Tour, and none have done so in a major. The absence of data from Polymarket or Manifold limits cross-platform comparison, but Kalshi's concentrated volume suggests strong trader conviction. No specific external trigger, such as recent course changes or player form, has been identified in today's news flow to explain the odds.