Circa Sports launches at the D Las Vegas Bailey Schultz, Las Vegas Review-Journal · June 20, 2019 at 3:12 pm Visitors at D Las Vegas might notice a few changes inside the downtown casino. Owner and developer Derek Stevens unveiled the Circa Sports betting brand Wednesday inside the D, on the heels of its debut at the Golden Gate this month. The updated sportsbook features a social setting, TV screens, bar-top table games and self-service kiosks. Sports wagering “is a business we’ve wanted to get into for quite a while,” Stevens said last month. “When we had the Golden Gate and the D, we thought we would never have enough volume.