semi-finalist
US /ˌsem.iˈfaɪ.nəl.ɪst/
UK /ˌsem.iˈfaɪ.nəl.ɪst/

1.
a person or team that has reached the semi-final of a competition
:
•
She became a semi-finalist in the national spelling bee.
•
The team celebrated reaching the semi-finalist stage.