Former world No.1 blames weather delays for discomfort . He was 11 over par when forced out after two holes in San Diego . Tournament was his first PGA event of season after last week back surgery . Tiger Woods ' season took a turn for the worse when he was forced to withdraw from the Farmers Insurance Open at Torrey Pines just 11 holes into his first round on Thursday . Setback follows worst round of his professional career season .
Former world No.1 blames weather delays for discomfort . He was 11 over par when forced out after two holes in San Diego . Tournament was his first PGA event of season after last week back surgery . Setback follows worst round of his professional career season .