Asked if the injury was more serious than back spasms, Woods said, "Well, it is back spasms, so we've done all the protocols and it's just a matter of keeping everything aligned so I don't go into that.''
Asked if he has had an MRI on his back, he replied: "As I said, we've done all the protocols.''
Woods is off to the worst start of his career, with a tie for 80th at the Farmers Insurance Open, a tie for 41st at the Dubai Desert Classic, the withdrawal from last week's Honda and now a tie for 25that Doral.
Woods currently has just one more tournament scheduled prior to the Masters, the Arnold Palmer Invitational at Bay Hill beginning March 20. In each of his four Masters victories, Woods had won at least once prior to the year's first major.
For just the eighth time in his career, Woods failed to make a birdie during a round on the PGA Tour. The last time that happened was the first round of the Tour Championship in September, when he was also suffered with back issues. Sunday was Woods' 1,096th round as a pro.
There appear to be bigger concerns for Woods at the moment, though.
"It's over,'' he said when asked to size up the day. "It's finally over. Which is good.''
As for the plan going forward, he added: "I don't know, just let me get through this day, get some treatment and we'll assess it as time goes on.''