Outfielder Corey Patterson, once projected as the Chicago Cubs' star of the future, was traded to the Baltimore Orioles on Monday for a pair of minor-leaguers: Shortstop Nate Spears and left-hander Carlos Perez. The 26-year-old Patterson hit .252 with 70 homers in parts of six major-league seasons with the Cubs, appearing in 589 games. He was the Cubs' first-round pick and third player taken overall in the 1998 amateur draft.