white hope

/W AY1 T OW0 P/
noun
  1. 1

    A highly skilled white/Caucasian challenger for leadership in a field whose top ranks are dominated by non-Caucasians; especially a field which was once dominated by white Caucasians, and is now dominated by those of black-African descent.

  2. 2

    A person expected to succeed and bring prestige to their native group.

Source: https://en.wiktionary.org/wiki/great%20white%20hope, https://en.wiktionary.org/wiki/white%20hope