Possible Clues:

• Gold rush initially absorbing partner without finesse ...
• Unpaid, a foreign RU team
• A mature undisciplined sportsman perhaps
• Unpaid practitioner
• One's not pro-America and against Europe, no gains in that
• That's no pronoun
• Rank one?
• Dilettante, e.g.
• A colleague said you are incompetent
• A universal right to embrace partner's status in sport