The first President to open the baseball season was William Howard Taft. In 1910, he threw a baseball from the stands at Washington, D.C.'s Griffith Stadium.
william howard taft
Wiiliam H. Taft
President Theodore Roosevelt
President William Howard Taft threw out the ceremonial "first pitch" to open the 1910 season for the Washingto Senators home opener against the Philadelphia Athletics.
William Howard Taft was the first to open the major league baseball season by throwing out the first pitch on April 14, 1910. McKinley threw out the first pitch in a minor league game as governor of Ohio before he was President.
Wiiliam H. Taft
Baseball history reports that President William Howard Taft was the first president to throw out the ceremonial "first pitch" in the Major Leagues. He did so to open the 1910 season in Washington when the Senators hosted the Philadelphia Athletics to start the season. By the way, Walter Johnson shut out the A's 1-0 with a one-hitter on opening day, however, the A's recovered and went on to win the American League and beat the Chicago Cubs in the World Series.
1910
2006 (Open Season), 2008 (Open Season 2), and 2010 (Open Season 3).
the cincinnatti reds
The Open Season ended in 2008.