Kelvin Gastelum quickly became one of the most promising UFC fighters after winning The Ultimate Fighter 17. However, his ...

Throughout my 20 years of being subjected to drug tests, I have never encountered ... martial arts fighter to ever grace a UFC octagon, he has had many issues outside his sport.

Jones was forced to withdraw just days before his UFC 200 rematch with Daniel Cormier because of a failed drug test. Getty Images Jones has had a slew of issues pertaining to drug tests in the past.

Most UFC fighters would care deeply about an opponent's failed drug test for obvious reasons ... despite Kuniev's rookie status and past issues. This matchup highlights Blaydes' readiness ...

Because it was an out-of-competition drug test and the primary metabolite ... in Major League Baseball and the UFC, for example – experiencing similar issues with delayed positive tests.

The last thing that a UFC fighter wants is to be flagged by ... athletes like Jon Jones and T.J. Dillashaw failing crucial drug tests. However, those revelations were less surprising than others.

UFC heavyweight champion Jon “Bones” Jones has been charged with two misdemeanors related to an incident with a drug testing agent ... given some of my past issues. it’s important to set ...

“Bones” has dealt with a number of highly-publicized legal issues throughout his storied fighting career, the latest of which occurred on March 30 when UFC drug testing agents from Drug Free ...

Tygart mentioned issues with Conor McGregor re-entering the testing pool and Joe ... it was announced by the UFC that replacing USADA will be Drug Free Sport International. Hunter Campbell ...

UFC heavyweight Hamdy Abdelwahab has been banned for two years after failing two drug tests for the banned substance ... Eddie Hearn issues critical response to Dana White's slap fighting league ...