<P> In 1997 , MLB retired his uniform number 42 across all major league teams ; he was the first pro athlete in any sport to be so honored . MLB also adopted a new annual tradition , `` Jackie Robinson Day '' , for the first time on April 15 , 2004 , on which every player on every team wears No. 42 . </P>
<P> In 1997 , MLB retired his uniform number 42 across all major league teams ; he was the first pro athlete in any sport to be so honored . MLB also adopted a new annual tradition , `` Jackie Robinson Day '' , for the first time on April 15 , 2004 , on which every player on every team wears No. 42 . </P>
what was jackie robinson 's number in baseball
what was jackie robinson 's number in baseball
42
42