Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Frederick Tenney (November 26, 1871 - July 3, 1952) was an American first baseman in Major League Baseball who played for the Boston Beaneaters/Doves/Rustlers (1894 1907, 1911) and New York Giants (1908 1909). Major League Baseball (MLB) is the highest level of professional baseball in the United States and Canada, consisting of teams that play in the National League and the American League. The two leagues merged in 2000 into a single MLB organization led by the Commissioner of Baseball after 100 years as separate legal entities.