Mixed martial arts fighter Matt Riddle was fired by the UFC on Feb. 26 after he tested positive for marijuana for the second time. Riddle has a medical-marijuana card in Nevada.
The Chicago Bears' J'Marcus Webb was arrested for marijuana possession after a traffic stop for speeding on Feb 24. However, several days later, the pot charge was dismissed.
Nine players were suspended for Adderall use by the NFL in 2012. It's a "game-day performance enhancer," says the NFL spokesman Greg Aiello.
Former WBC middleweight champion Julio Cesar Chavez, Jr. received a nine-month suspension and $100,000 fine for testing positive for marijuana after his last fight in September.