Young, tall, orthodox American narrows it down quite a lot! Using Boxrec, I can only see it being one of these: (unless it's an inactive fighter)
Gerald Washington (16-0-1)
Dominic Breazeale (16-0)
Daniel Martz (14-2-1)
Edwin Alvarez (6-0)
Gerald Washington (16-0-1)
Dominic Breazeale (16-0)
Daniel Martz (14-2-1)
Edwin Alvarez (6-0)