The Washington Nationals are king of the mascot races.
Since the team started in 2005, four “presidents” race along to the first base side of foul territory to the excitement of fans of all ages. Four cartoonish mascots of George Washington, Teddy Roosevelt—the loveable loser of most races—Abraham Lincoln and Thomas Jefferson run most nights in the middle part of the game.
The last couple years, through coordination of the White House Historical Association, Calvin Coolidge and Herbert Hoover have joined the fun. Each character lasted one year before “retiring” to the new Spring Training complex in West Palm Beach.