The Evergreen State allows in-person sportsbooks only. Washington legalized sports betting on March 25, 2020 and took its first bet on Sept. 9, 2021. Only certain tribal casinos can take bets. Mobile sports betting, like Mississippi, will only be allowed if it is done within a casino property – a huge impediment to the state’s revenue potential. Statewide mobile betting doesn’t seem like a reality anytime soon.