Former NBA head coach George Karl is due to release his memoir titled "Furious George" next month and, boy, is he seething as ever.

Excerpts from the book mention Karl's displeasure toward Carmelo Anthony and former Denver Nuggets players, eliciting a huge backlash from most of them.

The latest details lifted from "Furious George" go into Karl's accusations that the use of performance-enhancing drugs is prevalent in the NBA.

"We've got a more thorough drug-testing program than the NFL or MLB, which we always brag about. But we've still got a drug issue, though a different one than thirty years ago. And this one bothers me more than the dumbasses who got in trouble with recreational drugs.

"I'm talking about performance-enhancing drugs — like steroids, human growth hormone, and so on. It's obvious some of our players are doping. How are some guys getting older — yet thinner and fitter? How are they recovering from injuries so fast? Why the hell are they going to Germany in the off-season? I doubt it's for the sauerkraut."

Karl coached nearly 2,000 games in his career — 1,999 to be exact, according to basketball-reference.com — so he's been in the league long enough to know what's happening behind the curtains.

But without evidence to back up such a serious claim, Karl's rant doesn't differentiate itself from baseless speculation being spread around the web.

Does it mean PEDs aren't widespread in the league? No, it doesn't. In fact, those in the NBA fringes say the league has to do more to make sure players — stars or no stars — are legit clean.

Stories on PED use are already rife in the grapevine. What the public wants is proof.

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