Today I learned
About Madeline de Jesús, an Puerto Rico athlete who competed in the 1984 Los Angeles Olympics.
Madeline was injured in the long jump, so she could not participate in the 4X400 relay race with her team, which would lead to the disqualification of the team.
Madeleine found a solution: her twin sister, Margaret, who was also a leading athlete, wanted a place in place and the Puerto Rican team went up to the next stage.
After the coach found out about the deception, he disqualified the team himself.
Source: https://en.wikipedia.org/wiki/Madeline_de_Jes%C3%BAs