Tiger Woods underwent back surgery in September, which was said to be a microdiscectomy. He was expected to make a full recovery, but he announced on Friday that he underwent another procedure on his back this week.

The "follow-up procedure" was done to "relieve discomfort," according to Woods' website.

His 2015-2016 PGA Tour debut is now further in question after yet another back surgery within six weeks.

"Tiger is doing well, and we expect him to make a full recovery," said neurosurgeon Dr. Charles Rich, who performed both procedures.

"It's one of those things that had to be done," Woods added. "I have an outstanding team of doctors, and I'll be back as soon as I can."

Woods' initial surgery was to relieve discomfort in his back due to a small disc fragment that was pinching his nerve. He battled back issues throughout the last two PGA seasons after undergoing his first surgery in March of 2014.

Since that first procedure, Woods has missed seven cuts in 15 events and his best finish came at the Wyndham Championship (10th place) in August.

Woods is currently on bed rest, but still plans to attend and host his "Hero World Challenge" in December, although he won't be able to participate.

"I look forward to being at my event," Woods said. "Hero is a tremendous supporter of my foundation and particularly our scholars. I appreciate everything that Mr. Munjal (vice chairman & CEO of Hero MotoCorp) and his company do for us."

"My family and the fans' concern and support have helped a lot. I'll be back, and I'll be ready to compete."

Woods perhaps had the most disappointing campaign of his career after missing the cut at the PGA Championship, British Open and U.S. Open this past season. He also took time off from the game because he said his performance at one point was "not acceptable" for PGA Tour standards.

He'll look for a big rebound when he's done rehabbing his latest back ailment.