Jason Quick of the Oregonian reports (via blog):

Tom Penn, the right-hand man of general manager Kevin Pritchard, has been fired by the Trail Blazers, The Oregonian has learned. Tuesday’s decision comes nearly 10 months after Penn was promoted to vice president of basketball operations.

It is unknown why Penn was fired, but it is believed to have come from owner Paul Allen and not Pritchard.

Penn came to the Blazers from the Memphis Grizzlies in May of 2007 and served as the team’s assistant general manager until he was promoted on May 18 to vice president.