In this 1912 black-and-white file photo, President William Howard Taft is seen throwing out the first ball on opening day for baseball, to start the season for the Washington Senators in Washington. A hundred years ago, a portly right-hander, President Taft threw out the first pitch at a Washington Senators game, a weak lob from the stands to the great Walter Johnson. On Monday, the Nationals bring in the left-hander President Barack Obama. (AP Photo, File)

In this 1912 black-and-white file photo, President William Howard Taft is seen throwing out the first ball on opening day for baseball, to start the season for the Washington Senators in Washington. A hundred years ago, a portly right-hander, President Taft threw out the first pitch at a Washington Senators game, a weak lob from the stands to the great Walter Johnson. On Monday, the Nationals bring in the left-hander President Barack Obama. (AP Photo, File)