Video showed a man believed to be Miami Dolphins lineman Jonathan Martin at his parents' home Thursday.
Martin left the Dolphins last week. On Sunday, his agents reportedly turned over voice mails and texts with racial slurs and threats of violence that teammate Richie Incognito made against Martin.
Vic Eumont, Martin's coach at Harvard-Westlake School, said his former player was the "perfect target' because of his good nature and quiet demeanor.
Neighbors said they were stunned to hear what Martin reportedly went through. Many said it was shocking that adults can bully just as severely as students with similarly negative consequences.