Only one perfect March Madness bracket remains among the 40 million entries tracked across all the major sites. It belongs to 14-year-old Otto Schellhammer, an eighth grader from the Pittsburgh area.
In the ESPN women's March Madness Challenge, Schellhammer's correctly picked all of the 48 games played so far. There are no perfect men's brackets.
Schellhammer says he knows basically nothing about basketball and doesn't even watch the games.