Tom Penn, who joined the Grizzlies when Michael Heisley bought the team in Vancouver in 2000, is leaving his post as assistant general manager to join the Portland Trail Blazers as assistant general manager, the Blazers announced Tuesday.

"Tom Penn is an expert on a litany of player personnel issues, and I'm excited to begin working with him immediately on next month's draft and free agency," said Blazers' GM Kevin Pritchard in a release on Tuesday.