COLUMBUS — Horse racing's future in Columbus might be in jeopardy. After nearly 80 seasons of fans flocking to Ag Park, the track manager is mulling whether it should close its gates to the sport for the final time, according to a Monday afternoon email from Columbus Exposition & Racing Inc. “CER has suspended its simulcast operation and is evaluating the future of horse racing in Columbus," the unsigned email said. "We are currently in negotiations with various parties and hope to make a decision regarding racing in the near future.