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LA JOLLA, CA - FEBRUARY 05: Tiger Woods holds his back after playing his tee shot on the 15th hole of the north course during the first round of the Farmers Insurance Open at Torrey Pines Golf Course on February 5, 2015 in La Jolla, California. (Photo by Donald Miralle/Getty Images)

LA JOLLA, CA - FEBRUARY 05:  Tiger Woods  holds his back after playing his tee shot on the 15th hole of the north course during the first round of the Farmers Insurance Open at Torrey Pines Golf Course on February 5, 2015 in La Jolla, California.  (Photo by Donald Miralle/Getty Images)