invitational

invitational /ˌɪnvəˈteɪʃənl̟/ adjective
invitational
/ˌɪnvəˈteɪʃənl̟/
adjective
Britannica Dictionary definition of INVITATIONAL
US, sports
: limited to people who have been invited to compete

— invitational

noun, plural invitationals [count]