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.
/ MLB.com |. Fewer African-Americans are playing in Major League Baseball today than two decades ago. The percentage was 8.5 percent on this season's Opening Day rosters. Commissioner Bud Selig announced on Wednesday the formation of a task force to tackle the issue of on-field diversity.