Monmouth Park, a New Jersey sports book, is suing US sports leagues for more than $150m (€128m) over their part in the blocking of betting in the state over the last four years. Owners of the racetrack named the National Collegiate Athletic Association and professional sports leagues, including American football’s NFL, basketball’s NBA and Major League Baseball, in court papers issued in May, according to the Philadelphia Inquirer. The New Jersey Thoroughbred Horsemen’s Association Inc claims the organisations “wrongfully” blocked New Jersey sports books from taking wagers since New Jersey attempted to legalise sports betting in 2014. The major sports…