Underdog Sports Leagues - Seattle

Underdog does not accept checks for league fees with the exception of corporate or sponsor checks that form part or all of a team balance.

Please mail corporate checks to the Underdog office as soon as possible following your team's confirmation into the league. 

Checks must be received by the start of the league (in time for processing), or the stored card on file (from registration) may be charged after Week 1.  Send checks to the address below and note the team and league to which it is related.

          Underdog Sports Leagues

          Attn: Accounting

          101 Nickerson St
           Suite 110

          Seattle, WA 98109