Tiger Woods Struggling Through Round 2 at Barclays After Tweaking Knee, Back

Tiger Woods has suffered an injury in the second round of the Barclays on Friday, per Jason Sobel of GolfChannel.com.

Update: Friday, August 24 at 7:05 p.m. ET

Apparently Woods hurt his back last night while sleeping, according to Bill Cooney of PGATour.com:

"

Tiger Woods said he hurt his back while sleeping last night on soft hotel bed. Also says he will sleep on the floor tonight. #FedExCup

— Bill Cooney (@BillCooney4653) August 24, 2012"

Posturepedic, anyone?

-- End of Update --

Sobel tweeted on Friday:

"

Tiger Woods keeps striping it like Old Tiger and maneuvering like, well, an Old Tiger. Beware the injured golfer. Or even a tweaked golfer.

— Jason Sobel (@JasonSobelGC) August 24, 2012"

On the other hand, Woods didn't appear to worried about his injuries, per Golf Channel host/anchor Kelly Tilghman:

"

Tiger Woods playing in a little pain, tight back. Jokes that he feels like Fred Couples right now.

— Kelly Tilghman (@KellyTilghmanGC) August 24, 2012"

Woods has seen his fair share of leg injuries in the past, but he's never experienced back problems like this. As of this writing, he is four under par for the tournament, after a three-under-par 68 on Thursday.

After doctors discovered a torn ACL after the 2008 U.S. Open, Woods had to undergo surgery, and he's had problems ever since, including a ruptured Achilles tendon.

Woods is not a young man anymore. He's 36 years old now, and he's been riddled with injuries. We can only hope his injuries on Friday aren't too serious.

This has been Woods' best year since 2008. He owns three victories and six top-10 finishes in 16 PGA Tour events this year, including a third-place finish at the British Open in July. He ranks first on tour in scoring average, 25th in greens in regulation (67.21 percent) and, surprisingly, 35th in driving accuracy (historically his problem area), per PGATour.com. He's even putting well every now and then, an area in which he ranks 38th (strokes gained). 

Since missing the cut at the Greenbrier Classic in early July, Woods has played well at the British Open, Bridgestone Invitational and PGA Championship. His putting game in particular has been coming together.

A setback right now would be devastating for the 14-time major champion, especially when he's just beginning to get his once-stellar game back.

The good news is that he played through the injuries on Friday.

Let's talk about his on Twitter.