Brazilian cyclist Kleber da Silva Ramos and Chinese Wimmer Chen Xinyi have been disqualified from Rio 2016 following positive doping tests.
Da Silva Ramos did not finish the men's road race, but tested positive for EPO and accepted a provisional suspension without requesting a hearing.
Chen reached the women's 100 metre butterfly final and finished fourth, less than a tenth of a second outside of a place on the podium.
The 18-year-old Chinese returned a positive test for hydrochlorothiazide and also accepted a provisional suspension.
Chen faced a hearing on the case on Wednesday, but was disqualified from the Games.
A statement from the Court of Arbitration for Sport added that the respective international federations will rule on potential sanctions beyond the Olympic Games.