I wonder why people are downvoting your comment. It’s literally what happened. See for instance this paper on the history of gender segregation in the Olympics: theworld.org/…/see-120-years-struggle-gender-equa….
Quote: “Margaret Murdock from the US won a silver in a tie in the 1976 Riffle Event, one of the events in the shooting categories. The rifle event was split into men’s and women’s events in 1984.”