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.
Roy White. Roy Hilton White (born December 27, 1943) is an American former professional baseball player and coach. He played his entire career in Major League Baseball as an outfielder for the New York Yankees between 1965 and 1979. With the Yankees, he won two championships in 1977 and '78, both over his hometown Los Angeles Dodgers.