"To celebrate the launch of the first Circa | Sports sportsbook we’re offering no-juice bets (zero-cent lines) on pro basketball, pro baseball, and the Champions League Final. Offer valid only on bets placed over the counter on full-game sides played on June 1."
That's from the Golden Gate website. A new casino called Circa is being built downtown, and it will have the largest sportsbook in the world with 3 floors and stadium seating. It's scheduled to open late next year.
The owners of Circa also own The D and Golden Gate, so apparently the Circa Sportsbook will operate in all of them.
On June 1 the Golden Gate will take 20K on Champions League, 10K on NHL, and 5K on baseball. No vig means "zero lines" instead of dime lines or 20 cent lines. So a baseball game would be -120/+120 or -150/+150.