Как по Английски будет semifinalista

noun

A match or round immediately preceding the final, the winner of which goes on to the final.

Примеры использования:

Their semi-final defeat

noun

The game or set of games before the final game in a competition

Примеры использования:

France was eliminated in saturday’s semifinal.

noun

A competitor or team that has reached the semi-final or semi-finals of a competition.

Примеры использования:

She was a semi-finalist in last year's championship