L.A. Clippers head coach Doc Rivers became the latest member of the NBA community to fire back at George Karl‘s rants in his book, Furious George.

George made a lot of headlines for writing in his essay that he is suspicious of a potential steroid issue that the league may have and questioned the condition of its former players who get thinner and healthier even at an advanced age.

“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.”

However, according to Rivers, it is non-existent and he gave a hilarious answer when asked why he thinks the former head coach made his controversial remarks.

As the book's official release date is getting closer, more players and coaches have shared their thoughts on Karl's tirades. With the amount of attention it's getting, it won't come as a surprise that it will sell a lot of copies but it can also be expected that Rivers will not be the last NBA personality to make his opinion known publicly about it either.