When Woods won the 2001 Masters, he became the only player to win four consecutive major professional golf titles, although not in the same calendar year. This achievement came to be known as the "Tiger Slam." Following a stellar 2001 and 2002 in which he continued to dominate the tour, Woods' career hit a slump. He did not win a major in 2003 or 2004. In September 2004, Vijay Singh overtook Woods in the Official World Golf Rankings, ending Woods' record streak of 264 weeks at No. 1.
ZOZO CHAMPIONSHIP: Won his 82nd PGA TOUR title at The ZOZO CHAMPIONSHIP, tying Sam Snead for the most wins in PGA TOUR history. Improved to 44-for-46 (95.6%) in his career with the outright 54-hole lead and 25-for-25 when leading by three shots or more after 54 holes. Marked his 14th career victory when leading/co-leading after each round. Played the par-3s in 9-under (field-best), reaching that mark for the first time in his career. Became the first player in the ShotLink era (since 2003) to bogey each of the first three holes of a tournament and go on to win. Opened with three rounds of 66 or better for the fourth time in his career (won all four).
Surgery: Pulled out of next two PGA TOUR starts, the Genesis Open and The Honda Classic. Released statement: "My doctors have advised me not to play the next two weeks, to continue my treatment and to let my back calm down. This is not what I was hoping for or expecting. I am extremely disappointed to miss the Genesis Open, a tournament that benefits my foundation, and The Honda Classic, my hometown event. I would like to thank Genesis for their support, and I know we will have an outstanding week." In April, announced on his website he had undergone further back surgery. The operation was performed by Dr. Richard Guyer of the Center for Disc Replacement at the Texas Back Institute.