On April 14, 1910, for the opening day of the MLB season, President William Taft threw a baseball from the stands at Washington, D.C.'s Griffith Stadium, thus creating a tradition. Since that day, every president except Jimmy Carter has thrown the ceremonial first pitch at least once to open a new season.
The first Indy 500 takes place on April 21, 1911, and the winner was Ray Harroun.
John J. McDermott becomes the first U.S.-born golfer to win the U.S. Open in 1911, and, to this day, he remains the youngest winner of this event.
James Barber opens the first miniature golf course at his estate in Pinehurst, North Carolina in 1916.
The Green Bay Packers are founded on August 11, 1919 in Green Bay, Wisconsin.