An unlikely comeback for horse racing?

Longtime race horse owner Armand Janjigian knows all about calculating the odds, but he still wants to rescue the state’s thoroughbred racing industry, even if it’s a long shot.

The business consultant and owner of the Kingsbury health clubs in Medfield and Kingston just turned 86. But he’s not ready to ride into the sunset.

Instead, he is plotting an unlikely comeback for thoroughbreds [in Massachusetts]. Janjigian is piecing together more than 300 acres near Interstate 84 in Sturbridge to build a new racetrack. He’s lining up investors for the $25 million-plus project. And he is working with town officials to rewrite the zoning rules to allow racing, and the gambling that would go along with it…