Underdog Fantasy is the second major pick'em DFS operator alongside PrizePicks, and the dominant Best Ball draft platform in the US. It accepts Nebraska players at age 18+ and has been one of the fastest-growing DFS operators since launching in 2020.
Underdog's pick'em product works the same way as PrizePicks — over/under player projections, 2 to 5 picks per entry, multiplier-style payouts. Selection sets are slightly different and Underdog often posts unique props PrizePicks doesn't offer, which is part of why many DFS players use both apps.
Best Ball is Underdog's signature product — a season-long fantasy football format where users draft a roster of NFL players and the highest-scoring lineup is automatically set each week. The result settles at the end of the season based on cumulative scoring. Underdog runs the largest Best Ball tournaments in the US, with seven-figure first-place prizes.
Underdog's 18+ minimum age is unusual — most Nebraska sports betting and DFS requires 21+. The lower age means college-aged Nebraska residents can use Underdog before they're legally eligible to enter a Nebraska sportsbook. If mobile sports betting passes in 2026, age parity may become a regulatory question.