A look at the injuries for Tiger Woods, who marked the 1-year anniversary of his latest comeback at the Hero World Challenge:
December 1994: Surgery on left knee to remove two benign tumors and scar tissue.
Dec. 13, 2002: Surgery on left knee to remove fluid inside and outside the ACL and remove benign cysts from his left knee. Misses the season opener in 2003.
August 2007: Ruptures the ACL in his left knee while running on a golf course after the British Open, but is able to keep playing. Wins five of the last six tournaments he plays, including the PGA Championship for his 13th major.
April 15, 2008: Two days after the Masters, has arthroscopic surgery on his left knee to repair cartilage damage.
May 2008: Advised weeks before the U.S. Open that he has two stress fractures of the left tibia and should rest for six weeks, the first three weeks on crutches.
June 24, 2008: Eight days after winning the U.S. Open, has surgery to repair the ACL in his left knee by using a tendon from his right thigh. Additional cartilage damage is repaired. Misses the rest of the season and does not return until the Match Play Championship at the end of February 2009.
December 2008: Injured his Achilles tendon in his right leg as he was running while preparing to return to golf.
Nov. 27, 2009: Hospitalized overnight with a sore neck and a cut lip that required five stitches when the SUV he was driving ran over a fire hydrant and into a tree.
May 9, 2010: Withdrew from the final round of The Players Championship, citing a bulging disk. He later said it was a neck issue that caused tingling in his right side, and that it first became a problem as he began practicing harder for his return to the Masters a month earlier.
April 10, 2011: Injures his left Achilles tendon hitting from an awkward stance below Eisenhower's Tree on the 17th at Augusta National. Withdraws from the Wells Fargo Championship.
May 12, 2011: Withdraws from The Players Championship after a 42 on the front nine. Diagnosed with an MCL sprain in his left knee and in his left Achilles tendon. He misses the next two months, including two majors, returning at the Bridgestone Invitational.
March 11, 2012: Feels tightness in his left Achilles tendon and withdraws after 11 holes of the final round in the Cadillac Championship at Doral. He wins in his next start at Bay Hill, his first PGA Tour victory since the scandal in his personal life.
Aug. 24, 2012: Moves stiffly during the second round of The Barclays and later says he felt pain in his lower back, which he attributed to a soft mattress in his hotel room.
June 13, 2013: Is seen shaking his left arm during the opening round of the U.S. Open. He later says it's a left elbow strain that he injured while winning The Players Championship a month earlier. He misses two tournaments and returns at the British Open.
Aug. 11, 2013: Said he felt tightness in his back during the final round of the PGA Championship.
Aug. 21, 2013: Two weeks after the PGA Championship, he only chips and putts on the back nine of the pro-am at The Barclays, complaining of a stiff neck and back that he attributed to a soft bed in the hotel. By Sunday at The Barclays, he dropped to his knees after one shot because of back spasms.
March 2, 2014: Withdraws after 13 holes of the final round at The Honda Classic because of lower back pain and spams, describing it as similar to what he felt at The Barclays.
March 9, 2014: Plays the final 12 holes with pain in his lower back, saying it began to flare up after hitting out of the bunker from an awkward lie in the Cadillac Championship at Doral. He shoots 78, the highest score of his career in a final round.
March 19, 2014: Withdraws from the Arnold Palmer Invitational because of the persistent pain in his back. He was the two-time defending champion.
March 31, 2014: Has surgery in Utah for a pinched nerve.
April 1, 2014: Announced he will miss the Masters and not return to golf until the summer.
Sept. 18, 2015: Underwent a second micro-discectomy surgery two days earlier to remove a disc fragment that was pinching his nerve.
October 2015: Woods has a procedure to "relieve discomfort" in his back and sets no timetable for his return to the PGA Tour.
April 20, 2017: Woods undergoes a fourth back surgery. The spinal fusion, labeled "a success" was to alleviate pain he had been experiencing in his back and leg.
March 4, 2019: Woods withdraws from the Arnold Palmer Invitational with a neck strain