His fiercest competition for any possible vacancies appears to be fellow 21 year old Duane Underwood Jr. but is already a rung ahead of Clifton at AA .
Jr. has struggled some this season after beginning the year on the disabled list .
His fiercest competition for any possible vacancies appears to be fellow 21 year old Duane Underwood Jr. , who has struggled some this season after beginning the year on the disabled list , but is already a rung ahead of Clifton at AA .