Sha'Carri Richardson will NOT run in the Olympics after being popped for weed ... 'cause U.S. Track & Field officials left the fastest woman in America off the 4 x 100m squad.
... this despite the fact that her 30-day suspension will end BEFORE the relay race is scheduled to begin.
Of course, 21-year-old Richardson recently tested positive for marijuana after the Olympic Trials last month ... and accepted the 1 month ban.
Despite a ton of outrage (weed is still illegal?), USOC officials stood by the punishment.