Today, the news broke that UFC light heavyweight champion Jon Jones tested positive for traces of cocaine prior to being allowed to defend his title in Las Vegas on Saturday.

That has led to questions about how drug testing is carried out in the UFC.

We were joined by MMA journalist Ariel Helwani to talk about that very issue and he revealed that recreational drugs were not meant to be tested.

"The executive director of the Nevada Athletic Commission, Bob Bennett told me today that it was actually an administrative oversight. They were not supposed to test for recreational drugs because out-of-competition, recreational drugs such as marijuana and cocaine are not banned substances," said Helwani, who said that they did not have the jurisdiction to punish Jones who has since entered a rehab facility.

But Helwani says things like testosterone replacement therapy have been banned, while random drug testing has been ramped up.

Meanwhile, he also chatted about Conor McGregor's upcoming fight against Dennis Siver on January 18th, his status outside Ireland and title potential.

Helwani also spoke about Donegal Joseph Duffy, the last man to beat McGregor, who is joining the UFC.