Not every player above or below the average is lucky or unlucky. Every player, given enough time, will establish their own BABIP baseline. Pitchers tend to settle closer to the league average because they face all different types of hitters. Batters will have a wider range based upon their individual skill sets (groundball/flyball, fast/slow, hard/weak contact, etc). A guy like Ichiro posts BABIP's in the .350 neighborhood, while a guy like Joe Crede was typically .250-ish. Relievers typically post lower BABIP's than starters.