However, Richardson seemed to be in good spirits despite the USATF's decision as she smiled for photographers ahead of Saturday's star-studded awards show.
During the event, host Anthony Mackie gave Richardson a special shout out during his monologue, and questioned the controversy surrounding her drug test scandal.
"USA Track & Field, how you mess that up?" Mackie shared. "Weed is a de-enhancing drug. It doesn't make you do anything besides watch another episode of Bob's Burgers. I don't get how you justify not letting her run."
In early July, the talented standout -- who was expected to contend for a gold medal before her disqualification -- accepted a one-month ban, retroactive to June 28, for failing the test.
"I want to take responsibility for my actions," Richardson told NBC. "I know what I did. I know what I'm supposed to do and am allowed not to do, and I still made that decision. I'm not making an excuse. I'm not looking for any empathy in my case."
Check out the video below for more on the controversy.