Golf Channel analyst Brandel Chamblee says he insinuated that Tiger Woods cheated and gave the world's No. 1 player an "F" for his five-win season in a column he wrote for Golf.com because "ethics matter more than athletics." FILE - In this Sept. 13, 2013, file photo, Tiger Woods checks his ball behind a tree behind the first green during the second round of the BMW Championship golf tournament at Conway Farms Golf Club in Lake Forest, Ill.