The fighters from the Ultimate Fighting Championship’s recent stop in Portland, Ore., that were drug tested all returned negative results.

The UFC 102 competitors that were required to submit testing samples were Randy Couture, Todd Duffee, Evan Dunham, Chris Leben, Antonio Rodrigo Nogueira, and Aaron Simpson.

All six athletes were tested both for “drugs of abuse and performance enhancing drugs,” according to the Oregon State Athletic Commission.

UFC 102 was the promotion’s first stop in the Pacific Northwest in the United States.