white hope
noun /ˌwaɪt ˈhəʊp/
/ˌwaɪt ˈhəʊp/
[singular] (informal)- a person who is expected to bring success to a team, an organization, etc.
- He was once the great white hope of British boxing.
Word Origin1911: originally referring to a white boxer thought capable of beating Jack Johnson, the first black world heavyweight champion.