Jack Entertainment names new senior vice president for Detroit casinoAnnalise Frank, Crain's Detroit Business · September 23, 2017 at 12:50 pm Jack Entertainment LLC is making leadership changes as its Greektown Casino-Hotel property undergoes arebranding and renovation. Chad Barnhill, former senior vice president and general manager of Jack Cincinnati Casino, is taking on a new role that — pending regulatory approval — will include overseeing the Greektown Casino-Hotel, Jack communications manager Samantha Chyette said. But he won’t replace Jason Gregorec, who will continue as general manager of the Greektown property.The Detroit property’s name will change to Jack Detroit Casino-Hotel on May 1. Before then, it is undergoing millions of dollars in renovation work and sign changes.Detroit-based Jack Entertainment, formerly Rock Gaming LLC, purchased Greektown in 2013. The company is part of Dan Gilbert’s Rock Ventures LLC.