Eager to bolster an inexperienced pitching staff during their first playoff run since 1997, the Baltimore Orioles obtained left-hander Joe Saunders on Sunday in a trade with the Arizona Diamondbacks. Baltimore gave Arizona right-handed reliever Matt Lindstrom and cash considerations or a player to be named later. Saunders, who was scheduled to start Sunday against San Diego, was 6-10 with a 4.22 ERA in 21 starts with Arizona this season.