.@DiamondCasinos, which previously entitled the IndyCar race @ISMRaceway, also will now title sponsor the track’s fall NASCAR Xfinity Series race in ’19 and ’20.

➖Desert Diamond has four locations in Arizona and is owned by a company formed by the tribal Tohono O’odham Nation. pic.twitter.com/6ZKdZLIN31

— Adam Stern (@A_S12) November 9, 2018