Tiger Woods used to have no trouble returning to golf after a long layoff. Woods had surgery on his left knee during the offseason and didn't play for two months until he returned at Torrey Pines. The Hero World Challenge presents the stiffest challenge on so many levels, starting with the fact it was two back surgeries that kept him out for 15 months, an injury that left him so debilitated that at times he wondered if he had played his last tournament. More...