Patrick O'Sullivan during a game in Calgary, Alberta. // John O’Sullivan, Patrick O'Sullivan (The Canadian Press Images/Larry MacDougal)

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Patrick O'Sullivan during a game in Calgary, Alberta.

American hockey player Patrick O'Sullivan endured years of verbal and physical abuse from his father, John, eventually filing for a restraining order against his dad. A former minor league player from Toronto, John regularly threatened and intimidated his son after poor performances. Things came to an ugly head during Patrick's junior days with the Mississauga Ice Dogs. During a 2003 game in Ottawa, John pounded on the glass and yelled insults and profanities at his son. Patrick filed assault charges the following day, and his dad was arrested and spent a month in jail. A court later granted a restraining order, and Patrick's mom, Cathie, filed for divorce.

* Bing: Where is Patrick O'Sullivan now?