(Reuters) - Will MacKenzie produced a roller-coaster, birdie-bogey-birdie finish to share the lead with fellow American Andrew Svoboda after the third round of the $5.6 million McGladrey Classic at Sea Island in Georgia on Saturday. MacKenzie, who had delivered the shot of the day with a spectacular ace at the par-three sixth, fired a five-under-par 65 in ideal scoring conditions on the Seaside Course to post a 12-under total of 198. ... More...