Rebecca Blackwell / AP Images
He became the first British athlete to win the floor competition and soon after beat teammate Louis Smith on the pommel horse.
The British athlete's double success has taken Team GB to second place in the Olympic medal table.
How exactly did he do it?
We broke down Whitlock's most impressive moves from the floor and the pommel horse competitions, using stills from Britain's most successful day ever at the Olympics and footage from Whitlock's previous competitions.