JACK MURPHY'S REVENGE:

With many wondering whether the Chargers are leaving Qualcomm Stadium for Los Angeles, San Diego's other major sports venue -- Petco Park -- has become the subject of a bizarre ownership controversy sparked by a mentally ill man who filed a simple document.

Derris Devon McQuaig took legal title to the downtown ballpark away from the city and the Padres two years ago by walking into the San Diego County Recorder's Officer and submitting a properly filled-out deed transfer.

Seriously.

County and city officials have been quietly trying to remedy the situation ever since, but a felony fraud case against McQuaig was dismissed last week after a judge ruled he's not mentally competent to be prosecuted.

Because no actual sale or transaction took place, government officials and real estate experts say there's essentially no chance of McQuaig taking control of the property, which was recently appraised at $539 million and is slated to host its first All-Star game in July.

But McQuaig has created a legal and bureaucratic nightmare that could be perpetrated on any property owner if someone decides to target them by casting doubt on their title in this way.

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