Mark Bradford, 46, tracked down a 13 year old who had been "trash talking" him in an online match of Call of Duty: Black Ops and assaulted him. The child was at a friend's house not far from Bradford's apartment and Bradford tracked him there and began choking him. The boy's mother was able to intervene before the child received serious injury. Bradford was apparently able to find the boy since he was a "loosely-connected friend of the family."
Bradford has reportedly suffered from mental health issues in the past. He has plead guilty to one count of assault by beating and is awaiting sentencing. Bradford claims he and the boy have reconciled and still play Black Ops together online.
For more details check http://www.escapistmagazine.com/news/view/113404-Middle-Aged-Gamer-Assaults-Teen-Over-Black-Ops-Beatdown and http://www.dailymail.co.uk/news/article-2043589/PlayStation-gamer-Mark-Bradford-46-throttles-schoolboy-Call-Of-Duty-revenge-attack.html?ito=feeds-newsxml
Ryan Hanenburg never uses his headset when playing Black Ops