PHILADELPHIA -- The Phillies lightened their organizational outfielder inventory Wednesday, trading Chris Roberson to the Orioles for cash.

The 28-year-old spent most of last season with Triple-A Ottawa, batting .266 in 113 games while playing primarily in center field. He adds depth to the Orioles, who will be auditioning replacements for anticipated free-agent departure Corey Patterson.

In two stints with Philadelphia in 2007, Roberson hit .286 (8-for-28) in 28 games. He will be remembered by Phillies fans for his play as a defensive replacement in a critical Sept. 5 loss in Atlanta.

Roberson entered the game without his sunglasses, and that contributed to two balls dropping in front of him during Atlanta's four-run eighth inning. Matt Diaz then doubled off Roberson's glove during a three-run ninth that turned an 8-2 lead into a 9-8 loss.

Roberson, who had no Minor League options remaining, had no place in the Phillies' plans for 2008. Philadelphia enters Spring Training with six outfielders in Pat Burrell, Shane Victorino, Geoff Jenkins, Jayson Werth, So Taguchi and Chris Snelling.

Selected by the Phillies in the ninth round of the 2001 First-Year Player Draft, Roberson made his Major League debut in 2006. He earned the Paul Owens Award, given to the organization's best Minor League pitchers and hitters in a given season, in 2005.