William Taft, born in 1857, served as the nation's 27th president from 1909 to 1913. During his presidency, Taft was the first president to throw out a pitch during a baseball game. That first pitch was in the 1910 Senator's Opening Day game against the Philadelphia Athletics.
It is said that Taft is also the one who helped to coin the term "seventh-inning stretch." Taft got up during the seventh inning of a game to stretch his legs because he could bear sitting down no more, Professor Noll says. The crowd got up to honor their president, but when the president returned a few minutes later, the crowd followed suit, thus giving the name, the "seventh-inning stretch."