William Hill Nevada has opened its upgraded race and sports betting facilities at the Edgewater Casino in Laughlin, Nevada. The move comes just in time for the start of the summer meet at Del Mar. The completion of the sportsbook follows its March opening of the Plaza in downtown Las Vegas. William Hill, which operates 100 sports books in Nevada, declined to disclose construction costs. The new William Hill race and sports book location in Laughlin features 64 television screens, including three 80-inch displays and 12 46-inch digital display boards over the wagering counter. The space also includes 25 carrels…