Atopy is a predisposition toward developing certain allergic hypersensitivity reactions. Atopy may have a hereditary component, although contact with the allergen or irritant must occur before the hypersensitivity reaction can develop.
As of 2012, 63.9 percent of players playing in Major League Baseball are white. There is no way of telling the exact number due to the number of players.
As pointed out on card #50 of the newly-issued set, (attached), the Jewish players of 2013 represented about one percent of Major League Baseballâs 1,355 players for the season.