<P> In some sports there are traditions in which rookies must do things, or tricks are played on them . Examples in baseball include players having to dress up in very strange costumes, or getting hit in the face with a cream pie; a traditional rookie's "hazing" procedure in American football involves taping players to a goalpost and dousing them with ice water, Gatorade, and other substances . </P> <P> In NASCAR, rookies are denoted by a yellow stripe on the rear bumper of the car that is placed on both sides of the name or symbol of the manufacturer of the car . </P> <P> To qualify as a rookie in Major League Baseball, a player must not have exceeded 130 at bats or fifty innings pitched in the majors, and also fewer than 45 days on the active rosters of major league clubs (excluding time on the disabled list or any time after rosters are expanded on September 1) in their previous seasons . Major League Baseball awards the best rookie with the Major League Baseball Rookie of the Year Award, as voted upon by the Baseball Writers' Association of America . </P> <Table> <Tr> <Td> </Td> <Td> Look up rookie in Wiktionary, the free dictionary . </Td> </Tr> </Table>

When are you considered a rookie in mlb