Following a positive test on steroids, Anderson Silva has been declared out from his coaching stint at The Ultimate Fighter (TUF) Brazil 4 with former UFC and Pride heavyweight champion Antonio Rodrigo Noguiera taking his place as head coach.

The request for Silva to stop his participation in the series was made by the Nevada State Athletic Commission (NSAC) which also regulates the TUF's episodes taken in Las Vegas, MMA Weekly said. This was after Silva tested positive for Drostanolone and Androstane metabolites during a drug test prior to his UFC 183 match with Nick Diaz.

Earlier, UFC President Dana White announced the continued participation of Silva in the series but it completely turned around upon the NSAC's request.

In a statement, the UFC and the show's Brazilian broadcaster, Globo, said they will respect the decision of the NSAC as they claimed that this will help Silva focus on his current undertaking.

"Anderson Silva has been an amazing champion and a true ambassador of the sport of mixed martial arts and the UFC will continue to support him as this process unfolds," read the statement quoted by MMA Junkie.

As a replacement, the UFC announced that Nogueria, "The Spider's" longtime mentor, will join the TV series. Based from his profile on UFC.com, Nogueria has a 34-9-1 record with strengths in stamina, jiu-jitsu and boxing skills. He is a 38-year-old fighter who hails from Brazil just like Silva.

MMA Fighting also noted that former light heavyweight champion Mauricio Rua will be the opposite coach on the show.

Meanwhile, NSAC chair Francisco Aguilar told MMA Fighting that taking Silva out was an easy decision for them especially after the positive drug test on him. The same report added that Silva will not be granted a license to fight in Nevada because of his temporary suspension.

The 39-year-old Silva defeated Diaz via unanimous decision last Jan. 31 at UFC 183. The match was his comeback fight a year after he broke his leg during a fight with Chris Weidman. According to a separate MMA Fighting report, Silva is already considered one of the greatest martial artist of all time with a 34-6 record.

In an earlier Latino Post report, Silva denied that he took the illegal and banned substances. He claimed that there was never a point in his life where he tested positive for the two steroids.

"I've been competing in this sport for a very long time. This is my nineteenth fight in the UFC. I have been thoroughly tested many times and have never had a positive drug test. I have not taken any performance enhancing drugs. My stance on drugs is, and will always be, the same. I'm an advocate for a clean sport," he explained.