Walter Johnson
The "Big M" was Frank Mahovlich.
SAM PERKINS
Glen Robinson
Oscar Robertson, Hall of Fame guard for the Royals and Bucks between 1960-1974, went by the nickname of Big O.
Andres Galarraga, first baseman for several teams between 1985-2004, was known as the Big Cat.
Hall of Famer Elvin Hayes, who played for the Rockets and Bullets between 1968-1984, went by the nickname of Big E. Or as we used to yell when he would hit one of those 14 foot turn around jumpers, EEEEEEEEEEEEEEEEEEEEEEE.
Big Country was the nickname for Bryant Reeves.
Ronald Glen Davis, a professional basketball player forward with the Orlando Magic has the nickname "Big Baby".
Dave Cowens
david ortiz
The 'Big Train' was Hall of Fame pitcher Walter Johnson of the Washington Senators.
PCH=The Big O/BucksThe Big O" or O-Train the Cincinnati Royals and the Milwaukee Bucks