No perfect NCAA Tournament bracket has ever been recorded in the modern era, with odds defying 1 in 9 quintillion outcomes across 63 games, fueling trader consensus at 99.4% for "No." Recent upsets like No. 11 NC State's Cinderella run and double-digit seeds advancing through the first two rounds have obliterated all publicly tracked brackets—ESPN's Million Dollar Challenge saw zero survivors past the Sweet 16—while chalk-heavy paths remain statistically negligible. Even in a dream scenario of wire-to-wire favorites winning the Final Four and championship, the combinatorial improbability and lack of historical precedent sustain overwhelming market conviction against perfection.