Underdog Fantasy is a daily fantasy sports app focused on best ball (automated lineup optimization) drafts and pick'em player prop contests. It is available in most US states under fantasy sports exemptions, similar to PrizePicks. Its best ball format is particularly popular for NFL season-long drafts. Unlike traditional DFS, best ball requires no weekly lineup changes — set it and forget it for the season.
Is Underdog Fantasy a gambling app?
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Underdog Fantasy operates under daily fantasy sports law, not sports betting law, which means it is available in states without legal sports betting. However, the pick'em contests (choosing player prop over/unders) function similarly to parlay betting and carry negative expected value for most players. The PASPA exemption for DFS has been controversial, with some states classifying apps like Underdog as gambling.
