But Jack Nicklaus -- who holds the record of 18 victories in golf's Grand Slam events -- still thinks Woods eventually will break that mark and get to his goal of 19.
"I feel very bad for Tiger. He's really worked towards my record," Nicklaus said Tuesday on "Mike & Mike" on ESPN Radio. "I still think he'll break my record.
"As long as he is physically able to do it. ... He's 38 years old and he's probably got another 10 years at least of being able to compete -- that's 40 more majors to win five of them. It shouldn't be too difficult.
"But then again, I've always said he's just gotta do it. It's gonna be difficult, but if I said anything different I think I would be a jerk. So I think I better say he will do that ... and I actually believe that."
Woods had microdiscectomy surgery to alleviate discomfort caused by a pinched nerve March 31. His schedule for the summer -- including the U.S. Open and Open Championship -- is still very much in doubt. Woods is also just three wins shy of tying Sam Snead's career mark for PGA Tour victories (82).
"It's tough right now, but I'm absolutely optimistic about the future," Woods said in a statement after the surgery.
"There are a couple of records by two outstanding individuals and players that I hope one day to break. As I've said many times, Sam [Snead] and Jack [Nicklaus] reached their milestones over an entire career. I plan to have a lot of years left in mine."
Nicklaus Says Tiger Will Break His Record
Jack Nicklaus thinks Tiger Woods will break his record of 18 major victories.
Major Questions For Tiger
After injuries have sidelined Tiger Woods, is it still possible to reach Jack Nicklaus' historic mark of 18 major victories?
Nicklaus' Legendary Achievement
Jack Nicklaus last won a major when Tiger Woods was in fourth grade. That historic win at the Masters was Nicklaus' 18th career major victory.