Oak Hill Capital Partners is buying Checkers Drive-In Restaurants for $525 million in a deal that is expected to be announced Thursday, the Wall Street Journal reported. Tampa, Fla.-based Checkers, which had about $830 million in system wide sales last year, has been owned by Sentinel Capital Partners since 2014, the WSJ said. Sentinel put Checkers up for sale in January; Piper Jaffray Cos advised on the auction, according to press reports.