ST. SIMONS ISLAND, Ga. -- Michael Thompson’s 9-foot birdie putt on No. 18 curled out, leaving him at 13 under, one shot ahead of Billy Horschel after three rounds of the McGladrey Classic. Thompson trailed Horschel all afternoon until No. 16, where Horschel pulled his tee shot into a water hazard and double bogeyed, putting Thompson ahead. Thompson and Horschel will tee it up together again Sunday in another Alabama-Floirda showdown. Trevor Immelman and Webb Simpson will enter the finale two shots back while Jeff Overton, Kris Blanks, Nick O’Hern and Louis Oosthuizen are four off the pace after 54 holes.