On April 15, 1947 Jackie Robinson made history by becoming the first Black player in Major League Baseball. Since 2009, every player in the league has worn number 42 on the anniversary of Robinson's debut. You too can honor the legacy of a great man and ball player with this Seattle Mariners 2024 Jackie Robinson Day Home Limited Jersey. This Nike jersey is constructed with stretch mesh fabric and Dri-FIT ADV technology to give you an and lightweight feel.